diff --git a/backend/Cargo.lock b/backend/Cargo.lock
index 2da79b9ed7..6cba8fa609 100644
--- a/backend/Cargo.lock
+++ b/backend/Cargo.lock
@@ -1151,6 +1151,15 @@ dependencies = [
  "backtrace",
 ]
 
+[[package]]
+name = "error-code"
+version = "0.1.0"
+dependencies = [
+ "derive_more",
+ "flowy-derive",
+ "protobuf",
+]
+
 [[package]]
 name = "eyre"
 version = "0.6.5"
@@ -1241,6 +1250,7 @@ dependencies = [
  "flowy-database",
  "flowy-derive",
  "flowy-document",
+ "flowy-error",
  "flowy-net",
  "futures",
  "futures-core",
@@ -1267,6 +1277,7 @@ dependencies = [
  "bytes",
  "chrono",
  "derive_more",
+ "error-code",
  "flowy-collaboration",
  "flowy-derive",
  "log",
@@ -1317,6 +1328,7 @@ dependencies = [
  "flowy-collaboration",
  "flowy-database",
  "flowy-derive",
+ "flowy-error",
  "futures",
  "futures-core",
  "futures-util",
@@ -1343,11 +1355,18 @@ dependencies = [
 name = "flowy-error"
 version = "0.1.0"
 dependencies = [
+ "backend-service",
  "bytes",
- "derive_more",
+ "error-code",
+ "flowy-collaboration",
+ "flowy-database",
  "flowy-derive",
  "lib-dispatch",
+ "lib-ot",
+ "lib-sqlite",
  "protobuf",
+ "r2d2",
+ "serde_json",
 ]
 
 [[package]]
@@ -1431,6 +1450,7 @@ dependencies = [
  "diesel_derives",
  "flowy-database",
  "flowy-derive",
+ "flowy-error",
  "flowy-net",
  "flowy-user-infra",
  "futures-core",
@@ -1460,6 +1480,7 @@ version = "0.1.0"
 dependencies = [
  "bytes",
  "derive_more",
+ "error-code",
  "fancy-regex",
  "flowy-derive",
  "lazy_static",
diff --git a/backend/src/services/doc/ws_actor.rs b/backend/src/services/doc/ws_actor.rs
index 85b196dfb7..df93edaba5 100644
--- a/backend/src/services/doc/ws_actor.rs
+++ b/backend/src/services/doc/ws_actor.rs
@@ -8,7 +8,7 @@ use crate::{
 use actix_rt::task::spawn_blocking;
 use actix_web::web::Data;
 use async_stream::stream;
-use backend_service::errors::{internal_error, Result as DocResult, ServerError};
+use backend_service::errors::{internal_error, Result, ServerError};
 use flowy_collaboration::{
     core::sync::ServerDocManager,
     protobuf::{WsDataType, WsDocumentData},
@@ -23,7 +23,7 @@ pub enum DocWsMsg {
     ClientData {
         client_data: WsClientData,
         pool: Data<PgPool>,
-        ret: oneshot::Sender<DocResult<()>>,
+        ret: oneshot::Sender<Result<()>>,
     },
 }
 
@@ -66,11 +66,11 @@ impl DocWsActor {
         }
     }
 
-    async fn handle_client_data(&self, client_data: WsClientData, pool: Data<PgPool>) -> DocResult<()> {
+    async fn handle_client_data(&self, client_data: WsClientData, pool: Data<PgPool>) -> Result<()> {
         let WsClientData { user, socket, data } = client_data;
         let document_data = spawn_blocking(move || {
             let document_data: WsDocumentData = parse_from_bytes(&data)?;
-            DocResult::Ok(document_data)
+            Result::Ok(document_data)
         })
         .await
         .map_err(internal_error)??;
@@ -91,11 +91,11 @@ impl DocWsActor {
         socket: Socket,
         data: Vec<u8>,
         pg_pool: Data<PgPool>,
-    ) -> DocResult<()> {
+    ) -> Result<()> {
         let mut revision_pb = spawn_blocking(move || {
             let revision: Revision = parse_from_bytes(&data)?;
             let _ = verify_md5(&revision)?;
-            DocResult::Ok(revision)
+            Result::Ok(revision)
         })
         .await
         .map_err(internal_error)??;
@@ -116,7 +116,7 @@ impl DocWsActor {
     }
 }
 
-fn verify_md5(revision: &Revision) -> DocResult<()> {
+fn verify_md5(revision: &Revision) -> Result<()> {
     if md5(&revision.delta_data) != revision.md5 {
         return Err(ServerError::internal().context("Revision md5 not match"));
     }
diff --git a/frontend/app_flowy/lib/user/application/sign_in_bloc.dart b/frontend/app_flowy/lib/user/application/sign_in_bloc.dart
index f67bcae063..56452bf338 100644
--- a/frontend/app_flowy/lib/user/application/sign_in_bloc.dart
+++ b/frontend/app_flowy/lib/user/application/sign_in_bloc.dart
@@ -1,7 +1,7 @@
 import 'package:app_flowy/user/domain/i_auth.dart';
 import 'package:dartz/dartz.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-user-infra/protobuf.dart' show UserProfile, ErrorCode;
-import 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 
@@ -40,7 +40,7 @@ class SignInBloc extends Bloc<SignInEvent, SignInState> {
     );
   }
 
-  SignInState stateFromCode(UserError error) {
+  SignInState stateFromCode(FlowyError error) {
     switch (ErrorCode.valueOf(error.code)!) {
       case ErrorCode.EmailFormatInvalid:
         return state.copyWith(isSubmitting: false, emailError: some(error.msg), passwordError: none());
@@ -67,7 +67,7 @@ abstract class SignInState with _$SignInState {
     required bool isSubmitting,
     required Option<String> passwordError,
     required Option<String> emailError,
-    required Option<Either<UserProfile, UserError>> successOrFail,
+    required Option<Either<UserProfile, FlowyError>> successOrFail,
   }) = _SignInState;
 
   factory SignInState.initial() => SignInState(
diff --git a/frontend/app_flowy/lib/user/application/sign_in_bloc.freezed.dart b/frontend/app_flowy/lib/user/application/sign_in_bloc.freezed.dart
index 2f557809d5..29b67d3fa7 100644
--- a/frontend/app_flowy/lib/user/application/sign_in_bloc.freezed.dart
+++ b/frontend/app_flowy/lib/user/application/sign_in_bloc.freezed.dart
@@ -519,7 +519,7 @@ class _$SignInStateTearOff {
       required bool isSubmitting,
       required Option<String> passwordError,
       required Option<String> emailError,
-      required Option<Either<UserProfile, UserError>> successOrFail}) {
+      required Option<Either<UserProfile, FlowyError>> successOrFail}) {
     return _SignInState(
       email: email,
       password: password,
@@ -541,7 +541,7 @@ mixin _$SignInState {
   bool get isSubmitting => throw _privateConstructorUsedError;
   Option<String> get passwordError => throw _privateConstructorUsedError;
   Option<String> get emailError => throw _privateConstructorUsedError;
-  Option<Either<UserProfile, UserError>> get successOrFail =>
+  Option<Either<UserProfile, FlowyError>> get successOrFail =>
       throw _privateConstructorUsedError;
 
   @JsonKey(ignore: true)
@@ -560,7 +560,7 @@ abstract class $SignInStateCopyWith<$Res> {
       bool isSubmitting,
       Option<String> passwordError,
       Option<String> emailError,
-      Option<Either<UserProfile, UserError>> successOrFail});
+      Option<Either<UserProfile, FlowyError>> successOrFail});
 }
 
 /// @nodoc
@@ -604,7 +604,7 @@ class _$SignInStateCopyWithImpl<$Res> implements $SignInStateCopyWith<$Res> {
       successOrFail: successOrFail == freezed
           ? _value.successOrFail
           : successOrFail // ignore: cast_nullable_to_non_nullable
-              as Option<Either<UserProfile, UserError>>,
+              as Option<Either<UserProfile, FlowyError>>,
     ));
   }
 }
@@ -622,7 +622,7 @@ abstract class _$SignInStateCopyWith<$Res>
       bool isSubmitting,
       Option<String> passwordError,
       Option<String> emailError,
-      Option<Either<UserProfile, UserError>> successOrFail});
+      Option<Either<UserProfile, FlowyError>> successOrFail});
 }
 
 /// @nodoc
@@ -668,7 +668,7 @@ class __$SignInStateCopyWithImpl<$Res> extends _$SignInStateCopyWithImpl<$Res>
       successOrFail: successOrFail == freezed
           ? _value.successOrFail
           : successOrFail // ignore: cast_nullable_to_non_nullable
-              as Option<Either<UserProfile, UserError>>,
+              as Option<Either<UserProfile, FlowyError>>,
     ));
   }
 }
@@ -695,7 +695,7 @@ class _$_SignInState implements _SignInState {
   @override
   final Option<String> emailError;
   @override
-  final Option<Either<UserProfile, UserError>> successOrFail;
+  final Option<Either<UserProfile, FlowyError>> successOrFail;
 
   @override
   String toString() {
@@ -748,7 +748,7 @@ abstract class _SignInState implements SignInState {
           required bool isSubmitting,
           required Option<String> passwordError,
           required Option<String> emailError,
-          required Option<Either<UserProfile, UserError>> successOrFail}) =
+          required Option<Either<UserProfile, FlowyError>> successOrFail}) =
       _$_SignInState;
 
   @override
@@ -762,7 +762,7 @@ abstract class _SignInState implements SignInState {
   @override
   Option<String> get emailError => throw _privateConstructorUsedError;
   @override
-  Option<Either<UserProfile, UserError>> get successOrFail =>
+  Option<Either<UserProfile, FlowyError>> get successOrFail =>
       throw _privateConstructorUsedError;
   @override
   @JsonKey(ignore: true)
diff --git a/frontend/app_flowy/lib/user/application/sign_up_bloc.dart b/frontend/app_flowy/lib/user/application/sign_up_bloc.dart
index 0271de7309..a0ade691ea 100644
--- a/frontend/app_flowy/lib/user/application/sign_up_bloc.dart
+++ b/frontend/app_flowy/lib/user/application/sign_up_bloc.dart
@@ -2,7 +2,7 @@ import 'package:app_flowy/user/domain/i_auth.dart';
 import 'package:dartz/dartz.dart';
 import 'package:easy_localization/easy_localization.dart';
 import 'package:flowy_sdk/protobuf/flowy-user-infra/protobuf.dart' show UserProfile, ErrorCode;
-import 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:app_flowy/generated/locale_keys.g.dart';
@@ -78,7 +78,7 @@ class SignUpBloc extends Bloc<SignUpEvent, SignUpState> {
     );
   }
 
-  SignUpState stateFromCode(UserError error) {
+  SignUpState stateFromCode(FlowyError error) {
     switch (ErrorCode.valueOf(error.code)!) {
       case ErrorCode.EmailFormatInvalid:
         return state.copyWith(
@@ -118,7 +118,7 @@ class SignUpState with _$SignUpState {
     required Option<String> passwordError,
     required Option<String> repeatPasswordError,
     required Option<String> emailError,
-    required Option<Either<UserProfile, UserError>> successOrFail,
+    required Option<Either<UserProfile, FlowyError>> successOrFail,
   }) = _SignUpState;
 
   factory SignUpState.initial() => SignUpState(
diff --git a/frontend/app_flowy/lib/user/application/sign_up_bloc.freezed.dart b/frontend/app_flowy/lib/user/application/sign_up_bloc.freezed.dart
index ec7b4d9dac..ec6c377fd1 100644
--- a/frontend/app_flowy/lib/user/application/sign_up_bloc.freezed.dart
+++ b/frontend/app_flowy/lib/user/application/sign_up_bloc.freezed.dart
@@ -707,7 +707,7 @@ class _$SignUpStateTearOff {
       required Option<String> passwordError,
       required Option<String> repeatPasswordError,
       required Option<String> emailError,
-      required Option<Either<UserProfile, UserError>> successOrFail}) {
+      required Option<Either<UserProfile, FlowyError>> successOrFail}) {
     return _SignUpState(
       email: email,
       password: password,
@@ -733,7 +733,7 @@ mixin _$SignUpState {
   Option<String> get passwordError => throw _privateConstructorUsedError;
   Option<String> get repeatPasswordError => throw _privateConstructorUsedError;
   Option<String> get emailError => throw _privateConstructorUsedError;
-  Option<Either<UserProfile, UserError>> get successOrFail =>
+  Option<Either<UserProfile, FlowyError>> get successOrFail =>
       throw _privateConstructorUsedError;
 
   @JsonKey(ignore: true)
@@ -754,7 +754,7 @@ abstract class $SignUpStateCopyWith<$Res> {
       Option<String> passwordError,
       Option<String> repeatPasswordError,
       Option<String> emailError,
-      Option<Either<UserProfile, UserError>> successOrFail});
+      Option<Either<UserProfile, FlowyError>> successOrFail});
 }
 
 /// @nodoc
@@ -808,7 +808,7 @@ class _$SignUpStateCopyWithImpl<$Res> implements $SignUpStateCopyWith<$Res> {
       successOrFail: successOrFail == freezed
           ? _value.successOrFail
           : successOrFail // ignore: cast_nullable_to_non_nullable
-              as Option<Either<UserProfile, UserError>>,
+              as Option<Either<UserProfile, FlowyError>>,
     ));
   }
 }
@@ -828,7 +828,7 @@ abstract class _$SignUpStateCopyWith<$Res>
       Option<String> passwordError,
       Option<String> repeatPasswordError,
       Option<String> emailError,
-      Option<Either<UserProfile, UserError>> successOrFail});
+      Option<Either<UserProfile, FlowyError>> successOrFail});
 }
 
 /// @nodoc
@@ -884,7 +884,7 @@ class __$SignUpStateCopyWithImpl<$Res> extends _$SignUpStateCopyWithImpl<$Res>
       successOrFail: successOrFail == freezed
           ? _value.successOrFail
           : successOrFail // ignore: cast_nullable_to_non_nullable
-              as Option<Either<UserProfile, UserError>>,
+              as Option<Either<UserProfile, FlowyError>>,
     ));
   }
 }
@@ -917,7 +917,7 @@ class _$_SignUpState implements _SignUpState {
   @override
   final Option<String> emailError;
   @override
-  final Option<Either<UserProfile, UserError>> successOrFail;
+  final Option<Either<UserProfile, FlowyError>> successOrFail;
 
   @override
   String toString() {
@@ -980,7 +980,7 @@ abstract class _SignUpState implements SignUpState {
           required Option<String> passwordError,
           required Option<String> repeatPasswordError,
           required Option<String> emailError,
-          required Option<Either<UserProfile, UserError>> successOrFail}) =
+          required Option<Either<UserProfile, FlowyError>> successOrFail}) =
       _$_SignUpState;
 
   @override
@@ -998,7 +998,7 @@ abstract class _SignUpState implements SignUpState {
   @override
   Option<String> get emailError => throw _privateConstructorUsedError;
   @override
-  Option<Either<UserProfile, UserError>> get successOrFail =>
+  Option<Either<UserProfile, FlowyError>> get successOrFail =>
       throw _privateConstructorUsedError;
   @override
   @JsonKey(ignore: true)
diff --git a/frontend/app_flowy/lib/user/domain/auth_state.dart b/frontend/app_flowy/lib/user/domain/auth_state.dart
index 6dc7d08e33..37916fbf7a 100644
--- a/frontend/app_flowy/lib/user/domain/auth_state.dart
+++ b/frontend/app_flowy/lib/user/domain/auth_state.dart
@@ -1,11 +1,11 @@
 import 'package:flowy_sdk/protobuf/flowy-user-infra/protobuf.dart' show UserProfile;
-import 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 part 'auth_state.freezed.dart';
 
 @freezed
 abstract class AuthState with _$AuthState {
   const factory AuthState.authenticated(UserProfile userProfile) = Authenticated;
-  const factory AuthState.unauthenticated(UserError error) = Unauthenticated;
+  const factory AuthState.unauthenticated(FlowyError error) = Unauthenticated;
   const factory AuthState.initial() = _Initial;
 }
diff --git a/frontend/app_flowy/lib/user/domain/auth_state.freezed.dart b/frontend/app_flowy/lib/user/domain/auth_state.freezed.dart
index 85e8fc3822..cf5aaa25c7 100644
--- a/frontend/app_flowy/lib/user/domain/auth_state.freezed.dart
+++ b/frontend/app_flowy/lib/user/domain/auth_state.freezed.dart
@@ -23,7 +23,7 @@ class _$AuthStateTearOff {
     );
   }
 
-  Unauthenticated unauthenticated(UserError error) {
+  Unauthenticated unauthenticated(FlowyError error) {
     return Unauthenticated(
       error,
     );
@@ -42,21 +42,21 @@ mixin _$AuthState {
   @optionalTypeArgs
   TResult when<TResult extends Object?>({
     required TResult Function(UserProfile userProfile) authenticated,
-    required TResult Function(UserError error) unauthenticated,
+    required TResult Function(FlowyError error) unauthenticated,
     required TResult Function() initial,
   }) =>
       throw _privateConstructorUsedError;
   @optionalTypeArgs
   TResult? whenOrNull<TResult extends Object?>({
     TResult Function(UserProfile userProfile)? authenticated,
-    TResult Function(UserError error)? unauthenticated,
+    TResult Function(FlowyError error)? unauthenticated,
     TResult Function()? initial,
   }) =>
       throw _privateConstructorUsedError;
   @optionalTypeArgs
   TResult maybeWhen<TResult extends Object?>({
     TResult Function(UserProfile userProfile)? authenticated,
-    TResult Function(UserError error)? unauthenticated,
+    TResult Function(FlowyError error)? unauthenticated,
     TResult Function()? initial,
     required TResult orElse(),
   }) =>
@@ -166,7 +166,7 @@ class _$Authenticated implements Authenticated {
   @optionalTypeArgs
   TResult when<TResult extends Object?>({
     required TResult Function(UserProfile userProfile) authenticated,
-    required TResult Function(UserError error) unauthenticated,
+    required TResult Function(FlowyError error) unauthenticated,
     required TResult Function() initial,
   }) {
     return authenticated(userProfile);
@@ -176,7 +176,7 @@ class _$Authenticated implements Authenticated {
   @optionalTypeArgs
   TResult? whenOrNull<TResult extends Object?>({
     TResult Function(UserProfile userProfile)? authenticated,
-    TResult Function(UserError error)? unauthenticated,
+    TResult Function(FlowyError error)? unauthenticated,
     TResult Function()? initial,
   }) {
     return authenticated?.call(userProfile);
@@ -186,7 +186,7 @@ class _$Authenticated implements Authenticated {
   @optionalTypeArgs
   TResult maybeWhen<TResult extends Object?>({
     TResult Function(UserProfile userProfile)? authenticated,
-    TResult Function(UserError error)? unauthenticated,
+    TResult Function(FlowyError error)? unauthenticated,
     TResult Function()? initial,
     required TResult orElse(),
   }) {
@@ -245,7 +245,7 @@ abstract class $UnauthenticatedCopyWith<$Res> {
   factory $UnauthenticatedCopyWith(
           Unauthenticated value, $Res Function(Unauthenticated) then) =
       _$UnauthenticatedCopyWithImpl<$Res>;
-  $Res call({UserError error});
+  $Res call({FlowyError error});
 }
 
 /// @nodoc
@@ -266,7 +266,7 @@ class _$UnauthenticatedCopyWithImpl<$Res> extends _$AuthStateCopyWithImpl<$Res>
       error == freezed
           ? _value.error
           : error // ignore: cast_nullable_to_non_nullable
-              as UserError,
+              as FlowyError,
     ));
   }
 }
@@ -277,7 +277,7 @@ class _$Unauthenticated implements Unauthenticated {
   const _$Unauthenticated(this.error);
 
   @override
-  final UserError error;
+  final FlowyError error;
 
   @override
   String toString() {
@@ -305,7 +305,7 @@ class _$Unauthenticated implements Unauthenticated {
   @optionalTypeArgs
   TResult when<TResult extends Object?>({
     required TResult Function(UserProfile userProfile) authenticated,
-    required TResult Function(UserError error) unauthenticated,
+    required TResult Function(FlowyError error) unauthenticated,
     required TResult Function() initial,
   }) {
     return unauthenticated(error);
@@ -315,7 +315,7 @@ class _$Unauthenticated implements Unauthenticated {
   @optionalTypeArgs
   TResult? whenOrNull<TResult extends Object?>({
     TResult Function(UserProfile userProfile)? authenticated,
-    TResult Function(UserError error)? unauthenticated,
+    TResult Function(FlowyError error)? unauthenticated,
     TResult Function()? initial,
   }) {
     return unauthenticated?.call(error);
@@ -325,7 +325,7 @@ class _$Unauthenticated implements Unauthenticated {
   @optionalTypeArgs
   TResult maybeWhen<TResult extends Object?>({
     TResult Function(UserProfile userProfile)? authenticated,
-    TResult Function(UserError error)? unauthenticated,
+    TResult Function(FlowyError error)? unauthenticated,
     TResult Function()? initial,
     required TResult orElse(),
   }) {
@@ -371,9 +371,9 @@ class _$Unauthenticated implements Unauthenticated {
 }
 
 abstract class Unauthenticated implements AuthState {
-  const factory Unauthenticated(UserError error) = _$Unauthenticated;
+  const factory Unauthenticated(FlowyError error) = _$Unauthenticated;
 
-  UserError get error => throw _privateConstructorUsedError;
+  FlowyError get error => throw _privateConstructorUsedError;
   @JsonKey(ignore: true)
   $UnauthenticatedCopyWith<Unauthenticated> get copyWith =>
       throw _privateConstructorUsedError;
@@ -417,7 +417,7 @@ class _$_Initial implements _Initial {
   @optionalTypeArgs
   TResult when<TResult extends Object?>({
     required TResult Function(UserProfile userProfile) authenticated,
-    required TResult Function(UserError error) unauthenticated,
+    required TResult Function(FlowyError error) unauthenticated,
     required TResult Function() initial,
   }) {
     return initial();
@@ -427,7 +427,7 @@ class _$_Initial implements _Initial {
   @optionalTypeArgs
   TResult? whenOrNull<TResult extends Object?>({
     TResult Function(UserProfile userProfile)? authenticated,
-    TResult Function(UserError error)? unauthenticated,
+    TResult Function(FlowyError error)? unauthenticated,
     TResult Function()? initial,
   }) {
     return initial?.call();
@@ -437,7 +437,7 @@ class _$_Initial implements _Initial {
   @optionalTypeArgs
   TResult maybeWhen<TResult extends Object?>({
     TResult Function(UserProfile userProfile)? authenticated,
-    TResult Function(UserError error)? unauthenticated,
+    TResult Function(FlowyError error)? unauthenticated,
     TResult Function()? initial,
     required TResult orElse(),
   }) {
diff --git a/frontend/app_flowy/lib/user/domain/i_auth.dart b/frontend/app_flowy/lib/user/domain/i_auth.dart
index 3b557616e8..ecece96f3f 100644
--- a/frontend/app_flowy/lib/user/domain/i_auth.dart
+++ b/frontend/app_flowy/lib/user/domain/i_auth.dart
@@ -1,5 +1,5 @@
 import 'package:dartz/dartz.dart';
-import 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/protobuf.dart';
 import 'package:flowy_sdk/protobuf/flowy-user-infra/protobuf.dart' show UserProfile;
 import 'package:flutter/material.dart';
@@ -14,9 +14,9 @@ class NewUser {
 }
 
 abstract class IAuth {
-  Future<Either<UserProfile, UserError>> signIn(String? email, String? password);
-  Future<Either<UserProfile, UserError>> signUp(String? name, String? password, String? email);
-  Future<Either<Unit, UserError>> signOut();
+  Future<Either<UserProfile, FlowyError>> signIn(String? email, String? password);
+  Future<Either<UserProfile, FlowyError>> signUp(String? name, String? password, String? email);
+  Future<Either<Unit, FlowyError>> signOut();
 }
 
 abstract class IAuthRouter {
diff --git a/frontend/app_flowy/lib/user/infrastructure/i_auth_impl.dart b/frontend/app_flowy/lib/user/infrastructure/i_auth_impl.dart
index b348d38c77..e94008cfb0 100644
--- a/frontend/app_flowy/lib/user/infrastructure/i_auth_impl.dart
+++ b/frontend/app_flowy/lib/user/infrastructure/i_auth_impl.dart
@@ -8,7 +8,7 @@ import 'package:flowy_infra_ui/widget/route/animation.dart';
 import 'package:flowy_sdk/protobuf/flowy-user-infra/protobuf.dart' show UserProfile;
 import 'package:app_flowy/user/domain/i_auth.dart';
 import 'package:app_flowy/user/infrastructure/repos/auth_repo.dart';
-import 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/protobuf.dart';
 import 'package:flutter/material.dart';
 
@@ -19,17 +19,17 @@ class AuthImpl extends IAuth {
   });
 
   @override
-  Future<Either<UserProfile, UserError>> signIn(String? email, String? password) {
+  Future<Either<UserProfile, FlowyError>> signIn(String? email, String? password) {
     return repo.signIn(email: email, password: password);
   }
 
   @override
-  Future<Either<UserProfile, UserError>> signUp(String? name, String? password, String? email) {
+  Future<Either<UserProfile, FlowyError>> signUp(String? name, String? password, String? email) {
     return repo.signUp(name: name, password: password, email: email);
   }
 
   @override
-  Future<Either<Unit, UserError>> signOut() {
+  Future<Either<Unit, FlowyError>> signOut() {
     return repo.signOut();
   }
 }
diff --git a/frontend/app_flowy/lib/user/infrastructure/i_splash_impl.dart b/frontend/app_flowy/lib/user/infrastructure/i_splash_impl.dart
index 79e8ce78e3..237b9ad60c 100644
--- a/frontend/app_flowy/lib/user/infrastructure/i_splash_impl.dart
+++ b/frontend/app_flowy/lib/user/infrastructure/i_splash_impl.dart
@@ -24,8 +24,8 @@ class SplashUserImpl implements ISplashUser {
         (userProfile) {
           return AuthState.authenticated(userProfile);
         },
-        (userError) {
-          return AuthState.unauthenticated(userError);
+        (FlowyError) {
+          return AuthState.unauthenticated(FlowyError);
         },
       );
     });
diff --git a/frontend/app_flowy/lib/user/infrastructure/repos/auth_repo.dart b/frontend/app_flowy/lib/user/infrastructure/repos/auth_repo.dart
index aea044d905..b42a5f7eda 100644
--- a/frontend/app_flowy/lib/user/infrastructure/repos/auth_repo.dart
+++ b/frontend/app_flowy/lib/user/infrastructure/repos/auth_repo.dart
@@ -1,10 +1,10 @@
 import 'package:dartz/dartz.dart';
 import 'package:flowy_sdk/dispatch/dispatch.dart';
 import 'package:flowy_sdk/protobuf/flowy-user-infra/protobuf.dart' show SignInRequest, SignUpRequest, UserProfile;
-import 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 class AuthRepository {
-  Future<Either<UserProfile, UserError>> signIn({required String? email, required String? password}) {
+  Future<Either<UserProfile, FlowyError>> signIn({required String? email, required String? password}) {
     //
     final request = SignInRequest.create()
       ..email = email ?? ''
@@ -13,7 +13,7 @@ class AuthRepository {
     return UserEventSignIn(request).send();
   }
 
-  Future<Either<UserProfile, UserError>> signUp(
+  Future<Either<UserProfile, FlowyError>> signUp(
       {required String? name, required String? password, required String? email}) {
     final request = SignUpRequest.create()
       ..email = email ?? ''
@@ -35,7 +35,7 @@ class AuthRepository {
     // });
   }
 
-  Future<Either<Unit, UserError>> signOut() {
+  Future<Either<Unit, FlowyError>> signOut() {
     return UserEventSignOut().send();
   }
 }
diff --git a/frontend/app_flowy/lib/user/presentation/sign_in_screen.dart b/frontend/app_flowy/lib/user/presentation/sign_in_screen.dart
index 869c55e715..9dd984f278 100644
--- a/frontend/app_flowy/lib/user/presentation/sign_in_screen.dart
+++ b/frontend/app_flowy/lib/user/presentation/sign_in_screen.dart
@@ -9,7 +9,7 @@ import 'package:flowy_infra_ui/widget/rounded_button.dart';
 import 'package:flowy_infra_ui/widget/rounded_input_field.dart';
 import 'package:flowy_infra_ui/widget/spacing.dart';
 import 'package:flowy_infra_ui/style_widget/snap_bar.dart';
-import 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-user-infra/protobuf.dart' show UserProfile;
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -39,7 +39,7 @@ class SignInScreen extends StatelessWidget {
     );
   }
 
-  void _handleSuccessOrFail(Either<UserProfile, UserError> result, BuildContext context) {
+  void _handleSuccessOrFail(Either<UserProfile, FlowyError> result, BuildContext context) {
     result.fold(
       (user) => router.pushWelcomeScreen(context, user),
       (error) => showSnapBar(context, error.msg),
diff --git a/frontend/app_flowy/lib/user/presentation/sign_up_screen.dart b/frontend/app_flowy/lib/user/presentation/sign_up_screen.dart
index 40aa18ef25..915fe6c505 100644
--- a/frontend/app_flowy/lib/user/presentation/sign_up_screen.dart
+++ b/frontend/app_flowy/lib/user/presentation/sign_up_screen.dart
@@ -7,7 +7,7 @@ import 'package:flowy_infra/theme.dart';
 import 'package:flowy_infra_ui/widget/rounded_button.dart';
 import 'package:flowy_infra_ui/widget/rounded_input_field.dart';
 import 'package:flowy_infra_ui/widget/spacing.dart';
-import 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-user-infra/protobuf.dart' show UserProfile;
 import 'package:flowy_infra_ui/style_widget/snap_bar.dart';
 import 'package:flutter/material.dart';
@@ -36,7 +36,7 @@ class SignUpScreen extends StatelessWidget {
     );
   }
 
-  void _handleSuccessOrFail(BuildContext context, Either<UserProfile, UserError> result) {
+  void _handleSuccessOrFail(BuildContext context, Either<UserProfile, FlowyError> result) {
     result.fold(
       (user) => router.pushWelcomeScreen(context, user),
       (error) => showSnapBar(context, error.msg),
diff --git a/frontend/app_flowy/lib/user/presentation/skip_log_in_screen.dart b/frontend/app_flowy/lib/user/presentation/skip_log_in_screen.dart
index 4c6df28b0f..c559c64371 100644
--- a/frontend/app_flowy/lib/user/presentation/skip_log_in_screen.dart
+++ b/frontend/app_flowy/lib/user/presentation/skip_log_in_screen.dart
@@ -10,7 +10,7 @@ import 'package:flowy_infra_ui/widget/spacing.dart';
 import 'package:flowy_log/flowy_log.dart';
 import 'package:flowy_sdk/dispatch/dispatch.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/protobuf.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:url_launcher/url_launcher.dart';
@@ -113,7 +113,7 @@ class _SkipLogInScreenState extends State<SkipLogInScreen> {
   void _openCurrentWorkspace(
     BuildContext context,
     UserProfile user,
-    dartz.Either<CurrentWorkspaceSetting, WorkspaceError> workspacesOrError,
+    dartz.Either<CurrentWorkspaceSetting, FlowyError> workspacesOrError,
   ) {
     workspacesOrError.fold(
       (workspaceSetting) {
diff --git a/frontend/app_flowy/lib/workspace/application/app/app_bloc.dart b/frontend/app_flowy/lib/workspace/application/app/app_bloc.dart
index a66eb5f56d..77888caa14 100644
--- a/frontend/app_flowy/lib/workspace/application/app/app_bloc.dart
+++ b/frontend/app_flowy/lib/workspace/application/app/app_bloc.dart
@@ -2,7 +2,7 @@ import 'package:app_flowy/workspace/domain/i_app.dart';
 import 'package:flowy_log/flowy_log.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/app_create.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:dartz/dartz.dart';
@@ -61,7 +61,7 @@ class AppBloc extends Bloc<AppEvent, AppState> {
     return super.close();
   }
 
-  void _handleViewsChanged(Either<List<View>, WorkspaceError> result) {
+  void _handleViewsChanged(Either<List<View>, FlowyError> result) {
     result.fold(
       (views) => add(AppEvent.didReceiveViews(views)),
       (error) {
@@ -112,7 +112,7 @@ class AppState with _$AppState {
     required bool isLoading,
     required List<View>? views,
     View? latestCreatedView,
-    required Either<Unit, WorkspaceError> successOrFailure,
+    required Either<Unit, FlowyError> successOrFailure,
   }) = _AppState;
 
   factory AppState.initial(App app) => AppState(
diff --git a/frontend/app_flowy/lib/workspace/application/app/app_bloc.freezed.dart b/frontend/app_flowy/lib/workspace/application/app/app_bloc.freezed.dart
index d795abad45..97c6987f07 100644
--- a/frontend/app_flowy/lib/workspace/application/app/app_bloc.freezed.dart
+++ b/frontend/app_flowy/lib/workspace/application/app/app_bloc.freezed.dart
@@ -1051,7 +1051,7 @@ class _$AppStateTearOff {
       required bool isLoading,
       required List<View>? views,
       View? latestCreatedView,
-      required Either<Unit, WorkspaceError> successOrFailure}) {
+      required Either<Unit, FlowyError> successOrFailure}) {
     return _AppState(
       app: app,
       isLoading: isLoading,
@@ -1071,7 +1071,7 @@ mixin _$AppState {
   bool get isLoading => throw _privateConstructorUsedError;
   List<View>? get views => throw _privateConstructorUsedError;
   View? get latestCreatedView => throw _privateConstructorUsedError;
-  Either<Unit, WorkspaceError> get successOrFailure =>
+  Either<Unit, FlowyError> get successOrFailure =>
       throw _privateConstructorUsedError;
 
   @JsonKey(ignore: true)
@@ -1088,7 +1088,7 @@ abstract class $AppStateCopyWith<$Res> {
       bool isLoading,
       List<View>? views,
       View? latestCreatedView,
-      Either<Unit, WorkspaceError> successOrFailure});
+      Either<Unit, FlowyError> successOrFailure});
 }
 
 /// @nodoc
@@ -1127,7 +1127,7 @@ class _$AppStateCopyWithImpl<$Res> implements $AppStateCopyWith<$Res> {
       successOrFailure: successOrFailure == freezed
           ? _value.successOrFailure
           : successOrFailure // ignore: cast_nullable_to_non_nullable
-              as Either<Unit, WorkspaceError>,
+              as Either<Unit, FlowyError>,
     ));
   }
 }
@@ -1142,7 +1142,7 @@ abstract class _$AppStateCopyWith<$Res> implements $AppStateCopyWith<$Res> {
       bool isLoading,
       List<View>? views,
       View? latestCreatedView,
-      Either<Unit, WorkspaceError> successOrFailure});
+      Either<Unit, FlowyError> successOrFailure});
 }
 
 /// @nodoc
@@ -1182,7 +1182,7 @@ class __$AppStateCopyWithImpl<$Res> extends _$AppStateCopyWithImpl<$Res>
       successOrFailure: successOrFailure == freezed
           ? _value.successOrFailure
           : successOrFailure // ignore: cast_nullable_to_non_nullable
-              as Either<Unit, WorkspaceError>,
+              as Either<Unit, FlowyError>,
     ));
   }
 }
@@ -1206,7 +1206,7 @@ class _$_AppState implements _AppState {
   @override
   final View? latestCreatedView;
   @override
-  final Either<Unit, WorkspaceError> successOrFailure;
+  final Either<Unit, FlowyError> successOrFailure;
 
   @override
   String toString() {
@@ -1253,7 +1253,7 @@ abstract class _AppState implements AppState {
       required bool isLoading,
       required List<View>? views,
       View? latestCreatedView,
-      required Either<Unit, WorkspaceError> successOrFailure}) = _$_AppState;
+      required Either<Unit, FlowyError> successOrFailure}) = _$_AppState;
 
   @override
   App get app => throw _privateConstructorUsedError;
@@ -1264,7 +1264,7 @@ abstract class _AppState implements AppState {
   @override
   View? get latestCreatedView => throw _privateConstructorUsedError;
   @override
-  Either<Unit, WorkspaceError> get successOrFailure =>
+  Either<Unit, FlowyError> get successOrFailure =>
       throw _privateConstructorUsedError;
   @override
   @JsonKey(ignore: true)
diff --git a/frontend/app_flowy/lib/workspace/application/doc/doc_bloc.dart b/frontend/app_flowy/lib/workspace/application/doc/doc_bloc.dart
index 0ba9405b8f..e1c954cb89 100644
--- a/frontend/app_flowy/lib/workspace/application/doc/doc_bloc.dart
+++ b/frontend/app_flowy/lib/workspace/application/doc/doc_bloc.dart
@@ -4,7 +4,7 @@ import 'package:app_flowy/workspace/domain/i_trash.dart';
 import 'package:app_flowy/workspace/domain/i_view.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/trash_create.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flutter_quill/flutter_quill.dart';
 import 'package:flowy_log/flowy_log.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -155,5 +155,5 @@ class DocState with _$DocState {
 @freezed
 class DocLoadState with _$DocLoadState {
   const factory DocLoadState.loading() = _Loading;
-  const factory DocLoadState.finish(Either<Unit, WorkspaceError> successOrFail) = _Finish;
+  const factory DocLoadState.finish(Either<Unit, FlowyError> successOrFail) = _Finish;
 }
diff --git a/frontend/app_flowy/lib/workspace/application/doc/doc_bloc.freezed.dart b/frontend/app_flowy/lib/workspace/application/doc/doc_bloc.freezed.dart
index 02a1f50d94..4b6f63f3d6 100644
--- a/frontend/app_flowy/lib/workspace/application/doc/doc_bloc.freezed.dart
+++ b/frontend/app_flowy/lib/workspace/application/doc/doc_bloc.freezed.dart
@@ -909,7 +909,7 @@ class _$DocLoadStateTearOff {
     return const _Loading();
   }
 
-  _Finish finish(Either<Unit, WorkspaceError> successOrFail) {
+  _Finish finish(Either<Unit, FlowyError> successOrFail) {
     return _Finish(
       successOrFail,
     );
@@ -924,20 +924,20 @@ mixin _$DocLoadState {
   @optionalTypeArgs
   TResult when<TResult extends Object?>({
     required TResult Function() loading,
-    required TResult Function(Either<Unit, WorkspaceError> successOrFail)
+    required TResult Function(Either<Unit, FlowyError> successOrFail)
         finish,
   }) =>
       throw _privateConstructorUsedError;
   @optionalTypeArgs
   TResult? whenOrNull<TResult extends Object?>({
     TResult Function()? loading,
-    TResult Function(Either<Unit, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<Unit, FlowyError> successOrFail)? finish,
   }) =>
       throw _privateConstructorUsedError;
   @optionalTypeArgs
   TResult maybeWhen<TResult extends Object?>({
     TResult Function()? loading,
-    TResult Function(Either<Unit, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<Unit, FlowyError> successOrFail)? finish,
     required TResult orElse(),
   }) =>
       throw _privateConstructorUsedError;
@@ -1016,7 +1016,7 @@ class _$_Loading implements _Loading {
   @optionalTypeArgs
   TResult when<TResult extends Object?>({
     required TResult Function() loading,
-    required TResult Function(Either<Unit, WorkspaceError> successOrFail)
+    required TResult Function(Either<Unit, FlowyError> successOrFail)
         finish,
   }) {
     return loading();
@@ -1026,7 +1026,7 @@ class _$_Loading implements _Loading {
   @optionalTypeArgs
   TResult? whenOrNull<TResult extends Object?>({
     TResult Function()? loading,
-    TResult Function(Either<Unit, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<Unit, FlowyError> successOrFail)? finish,
   }) {
     return loading?.call();
   }
@@ -1035,7 +1035,7 @@ class _$_Loading implements _Loading {
   @optionalTypeArgs
   TResult maybeWhen<TResult extends Object?>({
     TResult Function()? loading,
-    TResult Function(Either<Unit, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<Unit, FlowyError> successOrFail)? finish,
     required TResult orElse(),
   }) {
     if (loading != null) {
@@ -1084,7 +1084,7 @@ abstract class _Loading implements DocLoadState {
 abstract class _$FinishCopyWith<$Res> {
   factory _$FinishCopyWith(_Finish value, $Res Function(_Finish) then) =
       __$FinishCopyWithImpl<$Res>;
-  $Res call({Either<Unit, WorkspaceError> successOrFail});
+  $Res call({Either<Unit, FlowyError> successOrFail});
 }
 
 /// @nodoc
@@ -1104,7 +1104,7 @@ class __$FinishCopyWithImpl<$Res> extends _$DocLoadStateCopyWithImpl<$Res>
       successOrFail == freezed
           ? _value.successOrFail
           : successOrFail // ignore: cast_nullable_to_non_nullable
-              as Either<Unit, WorkspaceError>,
+              as Either<Unit, FlowyError>,
     ));
   }
 }
@@ -1115,7 +1115,7 @@ class _$_Finish implements _Finish {
   const _$_Finish(this.successOrFail);
 
   @override
-  final Either<Unit, WorkspaceError> successOrFail;
+  final Either<Unit, FlowyError> successOrFail;
 
   @override
   String toString() {
@@ -1144,7 +1144,7 @@ class _$_Finish implements _Finish {
   @optionalTypeArgs
   TResult when<TResult extends Object?>({
     required TResult Function() loading,
-    required TResult Function(Either<Unit, WorkspaceError> successOrFail)
+    required TResult Function(Either<Unit, FlowyError> successOrFail)
         finish,
   }) {
     return finish(successOrFail);
@@ -1154,7 +1154,7 @@ class _$_Finish implements _Finish {
   @optionalTypeArgs
   TResult? whenOrNull<TResult extends Object?>({
     TResult Function()? loading,
-    TResult Function(Either<Unit, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<Unit, FlowyError> successOrFail)? finish,
   }) {
     return finish?.call(successOrFail);
   }
@@ -1163,7 +1163,7 @@ class _$_Finish implements _Finish {
   @optionalTypeArgs
   TResult maybeWhen<TResult extends Object?>({
     TResult Function()? loading,
-    TResult Function(Either<Unit, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<Unit, FlowyError> successOrFail)? finish,
     required TResult orElse(),
   }) {
     if (finish != null) {
@@ -1205,9 +1205,9 @@ class _$_Finish implements _Finish {
 }
 
 abstract class _Finish implements DocLoadState {
-  const factory _Finish(Either<Unit, WorkspaceError> successOrFail) = _$_Finish;
+  const factory _Finish(Either<Unit, FlowyError> successOrFail) = _$_Finish;
 
-  Either<Unit, WorkspaceError> get successOrFail =>
+  Either<Unit, FlowyError> get successOrFail =>
       throw _privateConstructorUsedError;
   @JsonKey(ignore: true)
   _$FinishCopyWith<_Finish> get copyWith => throw _privateConstructorUsedError;
diff --git a/frontend/app_flowy/lib/workspace/application/doc/share_bloc.dart b/frontend/app_flowy/lib/workspace/application/doc/share_bloc.dart
index 48582082f3..c1504c4da7 100644
--- a/frontend/app_flowy/lib/workspace/application/doc/share_bloc.dart
+++ b/frontend/app_flowy/lib/workspace/application/doc/share_bloc.dart
@@ -2,7 +2,7 @@ import 'package:app_flowy/workspace/domain/i_share.dart';
 import 'package:app_flowy/workspace/infrastructure/markdown/delta_markdown.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/export.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:dartz/dartz.dart';
@@ -48,5 +48,5 @@ class DocShareEvent with _$DocShareEvent {
 class DocShareState with _$DocShareState {
   const factory DocShareState.initial() = _Initial;
   const factory DocShareState.loading() = _Loading;
-  const factory DocShareState.finish(Either<ExportData, WorkspaceError> successOrFail) = _Finish;
+  const factory DocShareState.finish(Either<ExportData, FlowyError> successOrFail) = _Finish;
 }
diff --git a/frontend/app_flowy/lib/workspace/application/doc/share_bloc.freezed.dart b/frontend/app_flowy/lib/workspace/application/doc/share_bloc.freezed.dart
index ce72e660f2..2df633c426 100644
--- a/frontend/app_flowy/lib/workspace/application/doc/share_bloc.freezed.dart
+++ b/frontend/app_flowy/lib/workspace/application/doc/share_bloc.freezed.dart
@@ -434,7 +434,7 @@ class _$DocShareStateTearOff {
     return const _Loading();
   }
 
-  _Finish finish(Either<ExportData, WorkspaceError> successOrFail) {
+  _Finish finish(Either<ExportData, FlowyError> successOrFail) {
     return _Finish(
       successOrFail,
     );
@@ -450,7 +450,7 @@ mixin _$DocShareState {
   TResult when<TResult extends Object?>({
     required TResult Function() initial,
     required TResult Function() loading,
-    required TResult Function(Either<ExportData, WorkspaceError> successOrFail)
+    required TResult Function(Either<ExportData, FlowyError> successOrFail)
         finish,
   }) =>
       throw _privateConstructorUsedError;
@@ -458,14 +458,14 @@ mixin _$DocShareState {
   TResult? whenOrNull<TResult extends Object?>({
     TResult Function()? initial,
     TResult Function()? loading,
-    TResult Function(Either<ExportData, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<ExportData, FlowyError> successOrFail)? finish,
   }) =>
       throw _privateConstructorUsedError;
   @optionalTypeArgs
   TResult maybeWhen<TResult extends Object?>({
     TResult Function()? initial,
     TResult Function()? loading,
-    TResult Function(Either<ExportData, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<ExportData, FlowyError> successOrFail)? finish,
     required TResult orElse(),
   }) =>
       throw _privateConstructorUsedError;
@@ -549,7 +549,7 @@ class _$_Initial implements _Initial {
   TResult when<TResult extends Object?>({
     required TResult Function() initial,
     required TResult Function() loading,
-    required TResult Function(Either<ExportData, WorkspaceError> successOrFail)
+    required TResult Function(Either<ExportData, FlowyError> successOrFail)
         finish,
   }) {
     return initial();
@@ -560,7 +560,7 @@ class _$_Initial implements _Initial {
   TResult? whenOrNull<TResult extends Object?>({
     TResult Function()? initial,
     TResult Function()? loading,
-    TResult Function(Either<ExportData, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<ExportData, FlowyError> successOrFail)? finish,
   }) {
     return initial?.call();
   }
@@ -570,7 +570,7 @@ class _$_Initial implements _Initial {
   TResult maybeWhen<TResult extends Object?>({
     TResult Function()? initial,
     TResult Function()? loading,
-    TResult Function(Either<ExportData, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<ExportData, FlowyError> successOrFail)? finish,
     required TResult orElse(),
   }) {
     if (initial != null) {
@@ -657,7 +657,7 @@ class _$_Loading implements _Loading {
   TResult when<TResult extends Object?>({
     required TResult Function() initial,
     required TResult Function() loading,
-    required TResult Function(Either<ExportData, WorkspaceError> successOrFail)
+    required TResult Function(Either<ExportData, FlowyError> successOrFail)
         finish,
   }) {
     return loading();
@@ -668,7 +668,7 @@ class _$_Loading implements _Loading {
   TResult? whenOrNull<TResult extends Object?>({
     TResult Function()? initial,
     TResult Function()? loading,
-    TResult Function(Either<ExportData, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<ExportData, FlowyError> successOrFail)? finish,
   }) {
     return loading?.call();
   }
@@ -678,7 +678,7 @@ class _$_Loading implements _Loading {
   TResult maybeWhen<TResult extends Object?>({
     TResult Function()? initial,
     TResult Function()? loading,
-    TResult Function(Either<ExportData, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<ExportData, FlowyError> successOrFail)? finish,
     required TResult orElse(),
   }) {
     if (loading != null) {
@@ -730,7 +730,7 @@ abstract class _Loading implements DocShareState {
 abstract class _$FinishCopyWith<$Res> {
   factory _$FinishCopyWith(_Finish value, $Res Function(_Finish) then) =
       __$FinishCopyWithImpl<$Res>;
-  $Res call({Either<ExportData, WorkspaceError> successOrFail});
+  $Res call({Either<ExportData, FlowyError> successOrFail});
 }
 
 /// @nodoc
@@ -750,7 +750,7 @@ class __$FinishCopyWithImpl<$Res> extends _$DocShareStateCopyWithImpl<$Res>
       successOrFail == freezed
           ? _value.successOrFail
           : successOrFail // ignore: cast_nullable_to_non_nullable
-              as Either<ExportData, WorkspaceError>,
+              as Either<ExportData, FlowyError>,
     ));
   }
 }
@@ -761,7 +761,7 @@ class _$_Finish implements _Finish {
   const _$_Finish(this.successOrFail);
 
   @override
-  final Either<ExportData, WorkspaceError> successOrFail;
+  final Either<ExportData, FlowyError> successOrFail;
 
   @override
   String toString() {
@@ -791,7 +791,7 @@ class _$_Finish implements _Finish {
   TResult when<TResult extends Object?>({
     required TResult Function() initial,
     required TResult Function() loading,
-    required TResult Function(Either<ExportData, WorkspaceError> successOrFail)
+    required TResult Function(Either<ExportData, FlowyError> successOrFail)
         finish,
   }) {
     return finish(successOrFail);
@@ -802,7 +802,7 @@ class _$_Finish implements _Finish {
   TResult? whenOrNull<TResult extends Object?>({
     TResult Function()? initial,
     TResult Function()? loading,
-    TResult Function(Either<ExportData, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<ExportData, FlowyError> successOrFail)? finish,
   }) {
     return finish?.call(successOrFail);
   }
@@ -812,7 +812,7 @@ class _$_Finish implements _Finish {
   TResult maybeWhen<TResult extends Object?>({
     TResult Function()? initial,
     TResult Function()? loading,
-    TResult Function(Either<ExportData, WorkspaceError> successOrFail)? finish,
+    TResult Function(Either<ExportData, FlowyError> successOrFail)? finish,
     required TResult orElse(),
   }) {
     if (finish != null) {
@@ -857,10 +857,10 @@ class _$_Finish implements _Finish {
 }
 
 abstract class _Finish implements DocShareState {
-  const factory _Finish(Either<ExportData, WorkspaceError> successOrFail) =
+  const factory _Finish(Either<ExportData, FlowyError> successOrFail) =
       _$_Finish;
 
-  Either<ExportData, WorkspaceError> get successOrFail =>
+  Either<ExportData, FlowyError> get successOrFail =>
       throw _privateConstructorUsedError;
   @JsonKey(ignore: true)
   _$FinishCopyWith<_Finish> get copyWith => throw _privateConstructorUsedError;
diff --git a/frontend/app_flowy/lib/workspace/application/home/home_listen_bloc.dart b/frontend/app_flowy/lib/workspace/application/home/home_listen_bloc.dart
index 5e71b82380..e7ae03b094 100644
--- a/frontend/app_flowy/lib/workspace/application/home/home_listen_bloc.dart
+++ b/frontend/app_flowy/lib/workspace/application/home/home_listen_bloc.dart
@@ -1,5 +1,6 @@
 import 'package:app_flowy/workspace/domain/i_user.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:dartz/dartz.dart';
@@ -31,7 +32,7 @@ class HomeListenBloc extends Bloc<HomeListenEvent, HomeListenState> {
     super.close();
   }
 
-  void _authDidChanged(Either<Unit, UserError> errorOrNothing) {
+  void _authDidChanged(Either<Unit, FlowyError> errorOrNothing) {
     errorOrNothing.fold((_) {}, (error) {
       if (error.code == ErrorCode.UserUnauthorized.value) {
         add(HomeListenEvent.unauthorized(error.msg));
diff --git a/frontend/app_flowy/lib/workspace/application/menu/menu_bloc.dart b/frontend/app_flowy/lib/workspace/application/menu/menu_bloc.dart
index 84db381db7..651d569451 100644
--- a/frontend/app_flowy/lib/workspace/application/menu/menu_bloc.dart
+++ b/frontend/app_flowy/lib/workspace/application/menu/menu_bloc.dart
@@ -5,7 +5,7 @@ import 'package:app_flowy/workspace/presentation/stack_page/blank/blank_page.dar
 import 'package:dartz/dartz.dart';
 import 'package:flowy_log/flowy_log.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/app_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 
@@ -77,7 +77,7 @@ class MenuBloc extends Bloc<MenuEvent, MenuState> {
     );
   }
 
-  void _handleAppsOrFail(Either<List<App>, WorkspaceError> appsOrFail) {
+  void _handleAppsOrFail(Either<List<App>, FlowyError> appsOrFail) {
     appsOrFail.fold(
       (apps) => add(MenuEvent.didReceiveApps(left(apps))),
       (error) => add(MenuEvent.didReceiveApps(right(error))),
@@ -91,7 +91,7 @@ class MenuEvent with _$MenuEvent {
   const factory MenuEvent.collapse() = Collapse;
   const factory MenuEvent.openPage(HomeStackContext context) = OpenPage;
   const factory MenuEvent.createApp(String name, {String? desc}) = CreateApp;
-  const factory MenuEvent.didReceiveApps(Either<List<App>, WorkspaceError> appsOrFail) = ReceiveApps;
+  const factory MenuEvent.didReceiveApps(Either<List<App>, FlowyError> appsOrFail) = ReceiveApps;
 }
 
 @freezed
@@ -99,7 +99,7 @@ class MenuState with _$MenuState {
   const factory MenuState({
     required bool isCollapse,
     required Option<List<App>> apps,
-    required Either<Unit, WorkspaceError> successOrFailure,
+    required Either<Unit, FlowyError> successOrFailure,
     required HomeStackContext stackContext,
   }) = _MenuState;
 
diff --git a/frontend/app_flowy/lib/workspace/application/menu/menu_bloc.freezed.dart b/frontend/app_flowy/lib/workspace/application/menu/menu_bloc.freezed.dart
index 3aa13660bc..a23f8bcd04 100644
--- a/frontend/app_flowy/lib/workspace/application/menu/menu_bloc.freezed.dart
+++ b/frontend/app_flowy/lib/workspace/application/menu/menu_bloc.freezed.dart
@@ -38,7 +38,7 @@ class _$MenuEventTearOff {
     );
   }
 
-  ReceiveApps didReceiveApps(Either<List<App>, WorkspaceError> appsOrFail) {
+  ReceiveApps didReceiveApps(Either<List<App>, FlowyError> appsOrFail) {
     return ReceiveApps(
       appsOrFail,
     );
@@ -57,7 +57,7 @@ mixin _$MenuEvent {
     required TResult Function(HomeStackContext<dynamic, dynamic> context)
         openPage,
     required TResult Function(String name, String? desc) createApp,
-    required TResult Function(Either<List<App>, WorkspaceError> appsOrFail)
+    required TResult Function(Either<List<App>, FlowyError> appsOrFail)
         didReceiveApps,
   }) =>
       throw _privateConstructorUsedError;
@@ -67,7 +67,7 @@ mixin _$MenuEvent {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
   }) =>
       throw _privateConstructorUsedError;
@@ -77,7 +77,7 @@ mixin _$MenuEvent {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
     required TResult orElse(),
   }) =>
@@ -169,7 +169,7 @@ class _$_Initial implements _Initial {
     required TResult Function(HomeStackContext<dynamic, dynamic> context)
         openPage,
     required TResult Function(String name, String? desc) createApp,
-    required TResult Function(Either<List<App>, WorkspaceError> appsOrFail)
+    required TResult Function(Either<List<App>, FlowyError> appsOrFail)
         didReceiveApps,
   }) {
     return initial();
@@ -182,7 +182,7 @@ class _$_Initial implements _Initial {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
   }) {
     return initial?.call();
@@ -195,7 +195,7 @@ class _$_Initial implements _Initial {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
     required TResult orElse(),
   }) {
@@ -292,7 +292,7 @@ class _$Collapse implements Collapse {
     required TResult Function(HomeStackContext<dynamic, dynamic> context)
         openPage,
     required TResult Function(String name, String? desc) createApp,
-    required TResult Function(Either<List<App>, WorkspaceError> appsOrFail)
+    required TResult Function(Either<List<App>, FlowyError> appsOrFail)
         didReceiveApps,
   }) {
     return collapse();
@@ -305,7 +305,7 @@ class _$Collapse implements Collapse {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
   }) {
     return collapse?.call();
@@ -318,7 +318,7 @@ class _$Collapse implements Collapse {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
     required TResult orElse(),
   }) {
@@ -440,7 +440,7 @@ class _$OpenPage implements OpenPage {
     required TResult Function(HomeStackContext<dynamic, dynamic> context)
         openPage,
     required TResult Function(String name, String? desc) createApp,
-    required TResult Function(Either<List<App>, WorkspaceError> appsOrFail)
+    required TResult Function(Either<List<App>, FlowyError> appsOrFail)
         didReceiveApps,
   }) {
     return openPage(context);
@@ -453,7 +453,7 @@ class _$OpenPage implements OpenPage {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
   }) {
     return openPage?.call(context);
@@ -466,7 +466,7 @@ class _$OpenPage implements OpenPage {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
     required TResult orElse(),
   }) {
@@ -606,7 +606,7 @@ class _$CreateApp implements CreateApp {
     required TResult Function(HomeStackContext<dynamic, dynamic> context)
         openPage,
     required TResult Function(String name, String? desc) createApp,
-    required TResult Function(Either<List<App>, WorkspaceError> appsOrFail)
+    required TResult Function(Either<List<App>, FlowyError> appsOrFail)
         didReceiveApps,
   }) {
     return createApp(name, desc);
@@ -619,7 +619,7 @@ class _$CreateApp implements CreateApp {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
   }) {
     return createApp?.call(name, desc);
@@ -632,7 +632,7 @@ class _$CreateApp implements CreateApp {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
     required TResult orElse(),
   }) {
@@ -698,7 +698,7 @@ abstract class $ReceiveAppsCopyWith<$Res> {
   factory $ReceiveAppsCopyWith(
           ReceiveApps value, $Res Function(ReceiveApps) then) =
       _$ReceiveAppsCopyWithImpl<$Res>;
-  $Res call({Either<List<App>, WorkspaceError> appsOrFail});
+  $Res call({Either<List<App>, FlowyError> appsOrFail});
 }
 
 /// @nodoc
@@ -719,7 +719,7 @@ class _$ReceiveAppsCopyWithImpl<$Res> extends _$MenuEventCopyWithImpl<$Res>
       appsOrFail == freezed
           ? _value.appsOrFail
           : appsOrFail // ignore: cast_nullable_to_non_nullable
-              as Either<List<App>, WorkspaceError>,
+              as Either<List<App>, FlowyError>,
     ));
   }
 }
@@ -730,7 +730,7 @@ class _$ReceiveApps implements ReceiveApps {
   const _$ReceiveApps(this.appsOrFail);
 
   @override
-  final Either<List<App>, WorkspaceError> appsOrFail;
+  final Either<List<App>, FlowyError> appsOrFail;
 
   @override
   String toString() {
@@ -763,7 +763,7 @@ class _$ReceiveApps implements ReceiveApps {
     required TResult Function(HomeStackContext<dynamic, dynamic> context)
         openPage,
     required TResult Function(String name, String? desc) createApp,
-    required TResult Function(Either<List<App>, WorkspaceError> appsOrFail)
+    required TResult Function(Either<List<App>, FlowyError> appsOrFail)
         didReceiveApps,
   }) {
     return didReceiveApps(appsOrFail);
@@ -776,7 +776,7 @@ class _$ReceiveApps implements ReceiveApps {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
   }) {
     return didReceiveApps?.call(appsOrFail);
@@ -789,7 +789,7 @@ class _$ReceiveApps implements ReceiveApps {
     TResult Function()? collapse,
     TResult Function(HomeStackContext<dynamic, dynamic> context)? openPage,
     TResult Function(String name, String? desc)? createApp,
-    TResult Function(Either<List<App>, WorkspaceError> appsOrFail)?
+    TResult Function(Either<List<App>, FlowyError> appsOrFail)?
         didReceiveApps,
     required TResult orElse(),
   }) {
@@ -841,10 +841,10 @@ class _$ReceiveApps implements ReceiveApps {
 }
 
 abstract class ReceiveApps implements MenuEvent {
-  const factory ReceiveApps(Either<List<App>, WorkspaceError> appsOrFail) =
+  const factory ReceiveApps(Either<List<App>, FlowyError> appsOrFail) =
       _$ReceiveApps;
 
-  Either<List<App>, WorkspaceError> get appsOrFail =>
+  Either<List<App>, FlowyError> get appsOrFail =>
       throw _privateConstructorUsedError;
   @JsonKey(ignore: true)
   $ReceiveAppsCopyWith<ReceiveApps> get copyWith =>
@@ -858,7 +858,7 @@ class _$MenuStateTearOff {
   _MenuState call(
       {required bool isCollapse,
       required Option<List<App>> apps,
-      required Either<Unit, WorkspaceError> successOrFailure,
+      required Either<Unit, FlowyError> successOrFailure,
       required HomeStackContext<dynamic, dynamic> stackContext}) {
     return _MenuState(
       isCollapse: isCollapse,
@@ -876,7 +876,7 @@ const $MenuState = _$MenuStateTearOff();
 mixin _$MenuState {
   bool get isCollapse => throw _privateConstructorUsedError;
   Option<List<App>> get apps => throw _privateConstructorUsedError;
-  Either<Unit, WorkspaceError> get successOrFailure =>
+  Either<Unit, FlowyError> get successOrFailure =>
       throw _privateConstructorUsedError;
   HomeStackContext<dynamic, dynamic> get stackContext =>
       throw _privateConstructorUsedError;
@@ -893,7 +893,7 @@ abstract class $MenuStateCopyWith<$Res> {
   $Res call(
       {bool isCollapse,
       Option<List<App>> apps,
-      Either<Unit, WorkspaceError> successOrFailure,
+      Either<Unit, FlowyError> successOrFailure,
       HomeStackContext<dynamic, dynamic> stackContext});
 }
 
@@ -924,7 +924,7 @@ class _$MenuStateCopyWithImpl<$Res> implements $MenuStateCopyWith<$Res> {
       successOrFailure: successOrFailure == freezed
           ? _value.successOrFailure
           : successOrFailure // ignore: cast_nullable_to_non_nullable
-              as Either<Unit, WorkspaceError>,
+              as Either<Unit, FlowyError>,
       stackContext: stackContext == freezed
           ? _value.stackContext
           : stackContext // ignore: cast_nullable_to_non_nullable
@@ -942,7 +942,7 @@ abstract class _$MenuStateCopyWith<$Res> implements $MenuStateCopyWith<$Res> {
   $Res call(
       {bool isCollapse,
       Option<List<App>> apps,
-      Either<Unit, WorkspaceError> successOrFailure,
+      Either<Unit, FlowyError> successOrFailure,
       HomeStackContext<dynamic, dynamic> stackContext});
 }
 
@@ -974,7 +974,7 @@ class __$MenuStateCopyWithImpl<$Res> extends _$MenuStateCopyWithImpl<$Res>
       successOrFailure: successOrFailure == freezed
           ? _value.successOrFailure
           : successOrFailure // ignore: cast_nullable_to_non_nullable
-              as Either<Unit, WorkspaceError>,
+              as Either<Unit, FlowyError>,
       stackContext: stackContext == freezed
           ? _value.stackContext
           : stackContext // ignore: cast_nullable_to_non_nullable
@@ -997,7 +997,7 @@ class _$_MenuState implements _MenuState {
   @override
   final Option<List<App>> apps;
   @override
-  final Either<Unit, WorkspaceError> successOrFailure;
+  final Either<Unit, FlowyError> successOrFailure;
   @override
   final HomeStackContext<dynamic, dynamic> stackContext;
 
@@ -1041,7 +1041,7 @@ abstract class _MenuState implements MenuState {
   const factory _MenuState(
       {required bool isCollapse,
       required Option<List<App>> apps,
-      required Either<Unit, WorkspaceError> successOrFailure,
+      required Either<Unit, FlowyError> successOrFailure,
       required HomeStackContext<dynamic, dynamic> stackContext}) = _$_MenuState;
 
   @override
@@ -1049,7 +1049,7 @@ abstract class _MenuState implements MenuState {
   @override
   Option<List<App>> get apps => throw _privateConstructorUsedError;
   @override
-  Either<Unit, WorkspaceError> get successOrFailure =>
+  Either<Unit, FlowyError> get successOrFailure =>
       throw _privateConstructorUsedError;
   @override
   HomeStackContext<dynamic, dynamic> get stackContext =>
diff --git a/frontend/app_flowy/lib/workspace/application/menu/menu_user_bloc.dart b/frontend/app_flowy/lib/workspace/application/menu/menu_user_bloc.dart
index b68700f4d8..f66da0262e 100644
--- a/frontend/app_flowy/lib/workspace/application/menu/menu_user_bloc.dart
+++ b/frontend/app_flowy/lib/workspace/application/menu/menu_user_bloc.dart
@@ -1,7 +1,7 @@
 import 'package:app_flowy/workspace/domain/i_user.dart';
 import 'package:flowy_log/flowy_log.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/workspace_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:dartz/dartz.dart';
@@ -39,8 +39,8 @@ class MenuUserBloc extends Bloc<MenuUserEvent, MenuUserState> {
     result.fold((l) => null, (error) => Log.error(error));
   }
 
-  void _profileUpdated(Either<UserProfile, UserError> userOrFailed) {}
-  void _workspacesUpdated(Either<List<Workspace>, WorkspaceError> workspacesOrFailed) {
+  void _profileUpdated(Either<UserProfile, FlowyError> userOrFailed) {}
+  void _workspacesUpdated(Either<List<Workspace>, FlowyError> workspacesOrFailed) {
     // fetch workspaces
     // iUserImpl.fetchWorkspaces().then((result) {
     //   result.fold(
diff --git a/frontend/app_flowy/lib/workspace/application/trash/trash_bloc.dart b/frontend/app_flowy/lib/workspace/application/trash/trash_bloc.dart
index cd20a56a97..3eda6e3eaa 100644
--- a/frontend/app_flowy/lib/workspace/application/trash/trash_bloc.dart
+++ b/frontend/app_flowy/lib/workspace/application/trash/trash_bloc.dart
@@ -2,7 +2,7 @@ import 'package:app_flowy/workspace/domain/i_trash.dart';
 import 'package:dartz/dartz.dart';
 import 'package:flowy_log/flowy_log.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/trash_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 part 'trash_bloc.freezed.dart';
@@ -45,14 +45,14 @@ class TrashBloc extends Bloc<TrashEvent, TrashState> {
     );
   }
 
-  Stream<TrashState> _handleResult(Either<dynamic, WorkspaceError> result) async* {
+  Stream<TrashState> _handleResult(Either<dynamic, FlowyError> result) async* {
     yield result.fold(
       (l) => state.copyWith(successOrFailure: left(unit)),
       (error) => state.copyWith(successOrFailure: right(error)),
     );
   }
 
-  void _listenTrashUpdated(Either<List<Trash>, WorkspaceError> trashOrFailed) {
+  void _listenTrashUpdated(Either<List<Trash>, FlowyError> trashOrFailed) {
     trashOrFailed.fold(
       (trash) {
         add(TrashEvent.didReceiveTrash(trash));
@@ -84,7 +84,7 @@ class TrashEvent with _$TrashEvent {
 class TrashState with _$TrashState {
   const factory TrashState({
     required List<Trash> objects,
-    required Either<Unit, WorkspaceError> successOrFailure,
+    required Either<Unit, FlowyError> successOrFailure,
   }) = _TrashState;
 
   factory TrashState.init() => TrashState(
diff --git a/frontend/app_flowy/lib/workspace/application/trash/trash_bloc.freezed.dart b/frontend/app_flowy/lib/workspace/application/trash/trash_bloc.freezed.dart
index aa26cda8b8..5fc468749e 100644
--- a/frontend/app_flowy/lib/workspace/application/trash/trash_bloc.freezed.dart
+++ b/frontend/app_flowy/lib/workspace/application/trash/trash_bloc.freezed.dart
@@ -980,7 +980,7 @@ class _$TrashStateTearOff {
 
   _TrashState call(
       {required List<Trash> objects,
-      required Either<Unit, WorkspaceError> successOrFailure}) {
+      required Either<Unit, FlowyError> successOrFailure}) {
     return _TrashState(
       objects: objects,
       successOrFailure: successOrFailure,
@@ -994,7 +994,7 @@ const $TrashState = _$TrashStateTearOff();
 /// @nodoc
 mixin _$TrashState {
   List<Trash> get objects => throw _privateConstructorUsedError;
-  Either<Unit, WorkspaceError> get successOrFailure =>
+  Either<Unit, FlowyError> get successOrFailure =>
       throw _privateConstructorUsedError;
 
   @JsonKey(ignore: true)
@@ -1008,7 +1008,7 @@ abstract class $TrashStateCopyWith<$Res> {
           TrashState value, $Res Function(TrashState) then) =
       _$TrashStateCopyWithImpl<$Res>;
   $Res call(
-      {List<Trash> objects, Either<Unit, WorkspaceError> successOrFailure});
+      {List<Trash> objects, Either<Unit, FlowyError> successOrFailure});
 }
 
 /// @nodoc
@@ -1032,7 +1032,7 @@ class _$TrashStateCopyWithImpl<$Res> implements $TrashStateCopyWith<$Res> {
       successOrFailure: successOrFailure == freezed
           ? _value.successOrFailure
           : successOrFailure // ignore: cast_nullable_to_non_nullable
-              as Either<Unit, WorkspaceError>,
+              as Either<Unit, FlowyError>,
     ));
   }
 }
@@ -1044,7 +1044,7 @@ abstract class _$TrashStateCopyWith<$Res> implements $TrashStateCopyWith<$Res> {
       __$TrashStateCopyWithImpl<$Res>;
   @override
   $Res call(
-      {List<Trash> objects, Either<Unit, WorkspaceError> successOrFailure});
+      {List<Trash> objects, Either<Unit, FlowyError> successOrFailure});
 }
 
 /// @nodoc
@@ -1070,7 +1070,7 @@ class __$TrashStateCopyWithImpl<$Res> extends _$TrashStateCopyWithImpl<$Res>
       successOrFailure: successOrFailure == freezed
           ? _value.successOrFailure
           : successOrFailure // ignore: cast_nullable_to_non_nullable
-              as Either<Unit, WorkspaceError>,
+              as Either<Unit, FlowyError>,
     ));
   }
 }
@@ -1083,7 +1083,7 @@ class _$_TrashState implements _TrashState {
   @override
   final List<Trash> objects;
   @override
-  final Either<Unit, WorkspaceError> successOrFailure;
+  final Either<Unit, FlowyError> successOrFailure;
 
   @override
   String toString() {
@@ -1117,12 +1117,12 @@ class _$_TrashState implements _TrashState {
 abstract class _TrashState implements TrashState {
   const factory _TrashState(
       {required List<Trash> objects,
-      required Either<Unit, WorkspaceError> successOrFailure}) = _$_TrashState;
+      required Either<Unit, FlowyError> successOrFailure}) = _$_TrashState;
 
   @override
   List<Trash> get objects => throw _privateConstructorUsedError;
   @override
-  Either<Unit, WorkspaceError> get successOrFailure =>
+  Either<Unit, FlowyError> get successOrFailure =>
       throw _privateConstructorUsedError;
   @override
   @JsonKey(ignore: true)
diff --git a/frontend/app_flowy/lib/workspace/application/view/view_bloc.dart b/frontend/app_flowy/lib/workspace/application/view/view_bloc.dart
index 579c3d4165..92f0fc6a31 100644
--- a/frontend/app_flowy/lib/workspace/application/view/view_bloc.dart
+++ b/frontend/app_flowy/lib/workspace/application/view/view_bloc.dart
@@ -1,6 +1,6 @@
 import 'package:dartz/dartz.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:app_flowy/workspace/domain/i_view.dart';
@@ -56,7 +56,7 @@ class ViewBloc extends Bloc<ViewEvent, ViewState> {
     );
   }
 
-  Stream<ViewState> _handleViewDidUpdate(Either<View, WorkspaceError> result) async* {
+  Stream<ViewState> _handleViewDidUpdate(Either<View, FlowyError> result) async* {
     yield result.fold(
       (view) => state.copyWith(view: view, successOrFailure: left(unit)),
       (error) => state.copyWith(successOrFailure: right(error)),
@@ -77,7 +77,7 @@ class ViewEvent with _$ViewEvent {
   const factory ViewEvent.rename(String newName) = Rename;
   const factory ViewEvent.delete() = Delete;
   const factory ViewEvent.duplicate() = Duplicate;
-  const factory ViewEvent.viewDidUpdate(Either<View, WorkspaceError> result) = ViewDidUpdate;
+  const factory ViewEvent.viewDidUpdate(Either<View, FlowyError> result) = ViewDidUpdate;
 }
 
 @freezed
@@ -85,7 +85,7 @@ class ViewState with _$ViewState {
   const factory ViewState({
     required View view,
     required bool isEditing,
-    required Either<Unit, WorkspaceError> successOrFailure,
+    required Either<Unit, FlowyError> successOrFailure,
   }) = _ViewState;
 
   factory ViewState.init(View view) => ViewState(
diff --git a/frontend/app_flowy/lib/workspace/application/view/view_bloc.freezed.dart b/frontend/app_flowy/lib/workspace/application/view/view_bloc.freezed.dart
index 2a25991d3c..4f1fe4b838 100644
--- a/frontend/app_flowy/lib/workspace/application/view/view_bloc.freezed.dart
+++ b/frontend/app_flowy/lib/workspace/application/view/view_bloc.freezed.dart
@@ -41,7 +41,7 @@ class _$ViewEventTearOff {
     return const Duplicate();
   }
 
-  ViewDidUpdate viewDidUpdate(Either<View, WorkspaceError> result) {
+  ViewDidUpdate viewDidUpdate(Either<View, FlowyError> result) {
     return ViewDidUpdate(
       result,
     );
@@ -60,7 +60,7 @@ mixin _$ViewEvent {
     required TResult Function(String newName) rename,
     required TResult Function() delete,
     required TResult Function() duplicate,
-    required TResult Function(Either<View, WorkspaceError> result)
+    required TResult Function(Either<View, FlowyError> result)
         viewDidUpdate,
   }) =>
       throw _privateConstructorUsedError;
@@ -71,7 +71,7 @@ mixin _$ViewEvent {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
   }) =>
       throw _privateConstructorUsedError;
   @optionalTypeArgs
@@ -81,7 +81,7 @@ mixin _$ViewEvent {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
     required TResult orElse(),
   }) =>
       throw _privateConstructorUsedError;
@@ -175,7 +175,7 @@ class _$Initial implements Initial {
     required TResult Function(String newName) rename,
     required TResult Function() delete,
     required TResult Function() duplicate,
-    required TResult Function(Either<View, WorkspaceError> result)
+    required TResult Function(Either<View, FlowyError> result)
         viewDidUpdate,
   }) {
     return initial();
@@ -189,7 +189,7 @@ class _$Initial implements Initial {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
   }) {
     return initial?.call();
   }
@@ -202,7 +202,7 @@ class _$Initial implements Initial {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
     required TResult orElse(),
   }) {
     if (initial != null) {
@@ -328,7 +328,7 @@ class _$SetEditing implements SetEditing {
     required TResult Function(String newName) rename,
     required TResult Function() delete,
     required TResult Function() duplicate,
-    required TResult Function(Either<View, WorkspaceError> result)
+    required TResult Function(Either<View, FlowyError> result)
         viewDidUpdate,
   }) {
     return setIsEditing(isEditing);
@@ -342,7 +342,7 @@ class _$SetEditing implements SetEditing {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
   }) {
     return setIsEditing?.call(isEditing);
   }
@@ -355,7 +355,7 @@ class _$SetEditing implements SetEditing {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
     required TResult orElse(),
   }) {
     if (setIsEditing != null) {
@@ -484,7 +484,7 @@ class _$Rename implements Rename {
     required TResult Function(String newName) rename,
     required TResult Function() delete,
     required TResult Function() duplicate,
-    required TResult Function(Either<View, WorkspaceError> result)
+    required TResult Function(Either<View, FlowyError> result)
         viewDidUpdate,
   }) {
     return rename(newName);
@@ -498,7 +498,7 @@ class _$Rename implements Rename {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
   }) {
     return rename?.call(newName);
   }
@@ -511,7 +511,7 @@ class _$Rename implements Rename {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
     required TResult orElse(),
   }) {
     if (rename != null) {
@@ -614,7 +614,7 @@ class _$Delete implements Delete {
     required TResult Function(String newName) rename,
     required TResult Function() delete,
     required TResult Function() duplicate,
-    required TResult Function(Either<View, WorkspaceError> result)
+    required TResult Function(Either<View, FlowyError> result)
         viewDidUpdate,
   }) {
     return delete();
@@ -628,7 +628,7 @@ class _$Delete implements Delete {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
   }) {
     return delete?.call();
   }
@@ -641,7 +641,7 @@ class _$Delete implements Delete {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
     required TResult orElse(),
   }) {
     if (delete != null) {
@@ -740,7 +740,7 @@ class _$Duplicate implements Duplicate {
     required TResult Function(String newName) rename,
     required TResult Function() delete,
     required TResult Function() duplicate,
-    required TResult Function(Either<View, WorkspaceError> result)
+    required TResult Function(Either<View, FlowyError> result)
         viewDidUpdate,
   }) {
     return duplicate();
@@ -754,7 +754,7 @@ class _$Duplicate implements Duplicate {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
   }) {
     return duplicate?.call();
   }
@@ -767,7 +767,7 @@ class _$Duplicate implements Duplicate {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
     required TResult orElse(),
   }) {
     if (duplicate != null) {
@@ -829,7 +829,7 @@ abstract class $ViewDidUpdateCopyWith<$Res> {
   factory $ViewDidUpdateCopyWith(
           ViewDidUpdate value, $Res Function(ViewDidUpdate) then) =
       _$ViewDidUpdateCopyWithImpl<$Res>;
-  $Res call({Either<View, WorkspaceError> result});
+  $Res call({Either<View, FlowyError> result});
 }
 
 /// @nodoc
@@ -850,7 +850,7 @@ class _$ViewDidUpdateCopyWithImpl<$Res> extends _$ViewEventCopyWithImpl<$Res>
       result == freezed
           ? _value.result
           : result // ignore: cast_nullable_to_non_nullable
-              as Either<View, WorkspaceError>,
+              as Either<View, FlowyError>,
     ));
   }
 }
@@ -861,7 +861,7 @@ class _$ViewDidUpdate implements ViewDidUpdate {
   const _$ViewDidUpdate(this.result);
 
   @override
-  final Either<View, WorkspaceError> result;
+  final Either<View, FlowyError> result;
 
   @override
   String toString() {
@@ -893,7 +893,7 @@ class _$ViewDidUpdate implements ViewDidUpdate {
     required TResult Function(String newName) rename,
     required TResult Function() delete,
     required TResult Function() duplicate,
-    required TResult Function(Either<View, WorkspaceError> result)
+    required TResult Function(Either<View, FlowyError> result)
         viewDidUpdate,
   }) {
     return viewDidUpdate(result);
@@ -907,7 +907,7 @@ class _$ViewDidUpdate implements ViewDidUpdate {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
   }) {
     return viewDidUpdate?.call(result);
   }
@@ -920,7 +920,7 @@ class _$ViewDidUpdate implements ViewDidUpdate {
     TResult Function(String newName)? rename,
     TResult Function()? delete,
     TResult Function()? duplicate,
-    TResult Function(Either<View, WorkspaceError> result)? viewDidUpdate,
+    TResult Function(Either<View, FlowyError> result)? viewDidUpdate,
     required TResult orElse(),
   }) {
     if (viewDidUpdate != null) {
@@ -974,10 +974,10 @@ class _$ViewDidUpdate implements ViewDidUpdate {
 }
 
 abstract class ViewDidUpdate implements ViewEvent {
-  const factory ViewDidUpdate(Either<View, WorkspaceError> result) =
+  const factory ViewDidUpdate(Either<View, FlowyError> result) =
       _$ViewDidUpdate;
 
-  Either<View, WorkspaceError> get result => throw _privateConstructorUsedError;
+  Either<View, FlowyError> get result => throw _privateConstructorUsedError;
   @JsonKey(ignore: true)
   $ViewDidUpdateCopyWith<ViewDidUpdate> get copyWith =>
       throw _privateConstructorUsedError;
@@ -990,7 +990,7 @@ class _$ViewStateTearOff {
   _ViewState call(
       {required View view,
       required bool isEditing,
-      required Either<Unit, WorkspaceError> successOrFailure}) {
+      required Either<Unit, FlowyError> successOrFailure}) {
     return _ViewState(
       view: view,
       isEditing: isEditing,
@@ -1006,7 +1006,7 @@ const $ViewState = _$ViewStateTearOff();
 mixin _$ViewState {
   View get view => throw _privateConstructorUsedError;
   bool get isEditing => throw _privateConstructorUsedError;
-  Either<Unit, WorkspaceError> get successOrFailure =>
+  Either<Unit, FlowyError> get successOrFailure =>
       throw _privateConstructorUsedError;
 
   @JsonKey(ignore: true)
@@ -1021,7 +1021,7 @@ abstract class $ViewStateCopyWith<$Res> {
   $Res call(
       {View view,
       bool isEditing,
-      Either<Unit, WorkspaceError> successOrFailure});
+      Either<Unit, FlowyError> successOrFailure});
 }
 
 /// @nodoc
@@ -1050,7 +1050,7 @@ class _$ViewStateCopyWithImpl<$Res> implements $ViewStateCopyWith<$Res> {
       successOrFailure: successOrFailure == freezed
           ? _value.successOrFailure
           : successOrFailure // ignore: cast_nullable_to_non_nullable
-              as Either<Unit, WorkspaceError>,
+              as Either<Unit, FlowyError>,
     ));
   }
 }
@@ -1064,7 +1064,7 @@ abstract class _$ViewStateCopyWith<$Res> implements $ViewStateCopyWith<$Res> {
   $Res call(
       {View view,
       bool isEditing,
-      Either<Unit, WorkspaceError> successOrFailure});
+      Either<Unit, FlowyError> successOrFailure});
 }
 
 /// @nodoc
@@ -1094,7 +1094,7 @@ class __$ViewStateCopyWithImpl<$Res> extends _$ViewStateCopyWithImpl<$Res>
       successOrFailure: successOrFailure == freezed
           ? _value.successOrFailure
           : successOrFailure // ignore: cast_nullable_to_non_nullable
-              as Either<Unit, WorkspaceError>,
+              as Either<Unit, FlowyError>,
     ));
   }
 }
@@ -1112,7 +1112,7 @@ class _$_ViewState implements _ViewState {
   @override
   final bool isEditing;
   @override
-  final Either<Unit, WorkspaceError> successOrFailure;
+  final Either<Unit, FlowyError> successOrFailure;
 
   @override
   String toString() {
@@ -1150,14 +1150,14 @@ abstract class _ViewState implements ViewState {
   const factory _ViewState(
       {required View view,
       required bool isEditing,
-      required Either<Unit, WorkspaceError> successOrFailure}) = _$_ViewState;
+      required Either<Unit, FlowyError> successOrFailure}) = _$_ViewState;
 
   @override
   View get view => throw _privateConstructorUsedError;
   @override
   bool get isEditing => throw _privateConstructorUsedError;
   @override
-  Either<Unit, WorkspaceError> get successOrFailure =>
+  Either<Unit, FlowyError> get successOrFailure =>
       throw _privateConstructorUsedError;
   @override
   @JsonKey(ignore: true)
diff --git a/frontend/app_flowy/lib/workspace/application/workspace/welcome_bloc.dart b/frontend/app_flowy/lib/workspace/application/workspace/welcome_bloc.dart
index 16fc9805ff..8f563344a8 100644
--- a/frontend/app_flowy/lib/workspace/application/workspace/welcome_bloc.dart
+++ b/frontend/app_flowy/lib/workspace/application/workspace/welcome_bloc.dart
@@ -2,7 +2,7 @@ import 'package:app_flowy/workspace/domain/i_user.dart';
 import 'package:app_flowy/workspace/infrastructure/repos/user_repo.dart';
 import 'package:flowy_log/flowy_log.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/workspace_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:dartz/dartz.dart';
@@ -76,7 +76,7 @@ class WelcomeBloc extends Bloc<WelcomeEvent, WelcomeState> {
     );
   }
 
-  void _workspacesUpdated(Either<List<Workspace>, WorkspaceError> workspacesOrFail) {
+  void _workspacesUpdated(Either<List<Workspace>, FlowyError> workspacesOrFail) {
     add(WelcomeEvent.workspacesReveived(workspacesOrFail));
   }
 }
@@ -87,7 +87,7 @@ class WelcomeEvent with _$WelcomeEvent {
   // const factory WelcomeEvent.fetchWorkspaces() = FetchWorkspace;
   const factory WelcomeEvent.createWorkspace(String name, String desc) = CreateWorkspace;
   const factory WelcomeEvent.openWorkspace(Workspace workspace) = OpenWorkspace;
-  const factory WelcomeEvent.workspacesReveived(Either<List<Workspace>, WorkspaceError> workspacesOrFail) =
+  const factory WelcomeEvent.workspacesReveived(Either<List<Workspace>, FlowyError> workspacesOrFail) =
       WorkspacesReceived;
 }
 
@@ -96,7 +96,7 @@ class WelcomeState with _$WelcomeState {
   const factory WelcomeState({
     required bool isLoading,
     required List<Workspace> workspaces,
-    required Either<Unit, WorkspaceError> successOrFailure,
+    required Either<Unit, FlowyError> successOrFailure,
   }) = _WelcomeState;
 
   factory WelcomeState.initial() => WelcomeState(
diff --git a/frontend/app_flowy/lib/workspace/application/workspace/welcome_bloc.freezed.dart b/frontend/app_flowy/lib/workspace/application/workspace/welcome_bloc.freezed.dart
index d0b7ebac29..6bd2c9bf4f 100644
--- a/frontend/app_flowy/lib/workspace/application/workspace/welcome_bloc.freezed.dart
+++ b/frontend/app_flowy/lib/workspace/application/workspace/welcome_bloc.freezed.dart
@@ -35,7 +35,7 @@ class _$WelcomeEventTearOff {
   }
 
   WorkspacesReceived workspacesReveived(
-      Either<List<Workspace>, WorkspaceError> workspacesOrFail) {
+      Either<List<Workspace>, FlowyError> workspacesOrFail) {
     return WorkspacesReceived(
       workspacesOrFail,
     );
@@ -53,7 +53,7 @@ mixin _$WelcomeEvent {
     required TResult Function(String name, String desc) createWorkspace,
     required TResult Function(Workspace workspace) openWorkspace,
     required TResult Function(
-            Either<List<Workspace>, WorkspaceError> workspacesOrFail)
+            Either<List<Workspace>, FlowyError> workspacesOrFail)
         workspacesReveived,
   }) =>
       throw _privateConstructorUsedError;
@@ -62,7 +62,7 @@ mixin _$WelcomeEvent {
     TResult Function()? initial,
     TResult Function(String name, String desc)? createWorkspace,
     TResult Function(Workspace workspace)? openWorkspace,
-    TResult Function(Either<List<Workspace>, WorkspaceError> workspacesOrFail)?
+    TResult Function(Either<List<Workspace>, FlowyError> workspacesOrFail)?
         workspacesReveived,
   }) =>
       throw _privateConstructorUsedError;
@@ -71,7 +71,7 @@ mixin _$WelcomeEvent {
     TResult Function()? initial,
     TResult Function(String name, String desc)? createWorkspace,
     TResult Function(Workspace workspace)? openWorkspace,
-    TResult Function(Either<List<Workspace>, WorkspaceError> workspacesOrFail)?
+    TResult Function(Either<List<Workspace>, FlowyError> workspacesOrFail)?
         workspacesReveived,
     required TResult orElse(),
   }) =>
@@ -160,7 +160,7 @@ class _$Initial implements Initial {
     required TResult Function(String name, String desc) createWorkspace,
     required TResult Function(Workspace workspace) openWorkspace,
     required TResult Function(
-            Either<List<Workspace>, WorkspaceError> workspacesOrFail)
+            Either<List<Workspace>, FlowyError> workspacesOrFail)
         workspacesReveived,
   }) {
     return initial();
@@ -172,7 +172,7 @@ class _$Initial implements Initial {
     TResult Function()? initial,
     TResult Function(String name, String desc)? createWorkspace,
     TResult Function(Workspace workspace)? openWorkspace,
-    TResult Function(Either<List<Workspace>, WorkspaceError> workspacesOrFail)?
+    TResult Function(Either<List<Workspace>, FlowyError> workspacesOrFail)?
         workspacesReveived,
   }) {
     return initial?.call();
@@ -184,7 +184,7 @@ class _$Initial implements Initial {
     TResult Function()? initial,
     TResult Function(String name, String desc)? createWorkspace,
     TResult Function(Workspace workspace)? openWorkspace,
-    TResult Function(Either<List<Workspace>, WorkspaceError> workspacesOrFail)?
+    TResult Function(Either<List<Workspace>, FlowyError> workspacesOrFail)?
         workspacesReveived,
     required TResult orElse(),
   }) {
@@ -316,7 +316,7 @@ class _$CreateWorkspace implements CreateWorkspace {
     required TResult Function(String name, String desc) createWorkspace,
     required TResult Function(Workspace workspace) openWorkspace,
     required TResult Function(
-            Either<List<Workspace>, WorkspaceError> workspacesOrFail)
+            Either<List<Workspace>, FlowyError> workspacesOrFail)
         workspacesReveived,
   }) {
     return createWorkspace(name, desc);
@@ -328,7 +328,7 @@ class _$CreateWorkspace implements CreateWorkspace {
     TResult Function()? initial,
     TResult Function(String name, String desc)? createWorkspace,
     TResult Function(Workspace workspace)? openWorkspace,
-    TResult Function(Either<List<Workspace>, WorkspaceError> workspacesOrFail)?
+    TResult Function(Either<List<Workspace>, FlowyError> workspacesOrFail)?
         workspacesReveived,
   }) {
     return createWorkspace?.call(name, desc);
@@ -340,7 +340,7 @@ class _$CreateWorkspace implements CreateWorkspace {
     TResult Function()? initial,
     TResult Function(String name, String desc)? createWorkspace,
     TResult Function(Workspace workspace)? openWorkspace,
-    TResult Function(Either<List<Workspace>, WorkspaceError> workspacesOrFail)?
+    TResult Function(Either<List<Workspace>, FlowyError> workspacesOrFail)?
         workspacesReveived,
     required TResult orElse(),
   }) {
@@ -467,7 +467,7 @@ class _$OpenWorkspace implements OpenWorkspace {
     required TResult Function(String name, String desc) createWorkspace,
     required TResult Function(Workspace workspace) openWorkspace,
     required TResult Function(
-            Either<List<Workspace>, WorkspaceError> workspacesOrFail)
+            Either<List<Workspace>, FlowyError> workspacesOrFail)
         workspacesReveived,
   }) {
     return openWorkspace(workspace);
@@ -479,7 +479,7 @@ class _$OpenWorkspace implements OpenWorkspace {
     TResult Function()? initial,
     TResult Function(String name, String desc)? createWorkspace,
     TResult Function(Workspace workspace)? openWorkspace,
-    TResult Function(Either<List<Workspace>, WorkspaceError> workspacesOrFail)?
+    TResult Function(Either<List<Workspace>, FlowyError> workspacesOrFail)?
         workspacesReveived,
   }) {
     return openWorkspace?.call(workspace);
@@ -491,7 +491,7 @@ class _$OpenWorkspace implements OpenWorkspace {
     TResult Function()? initial,
     TResult Function(String name, String desc)? createWorkspace,
     TResult Function(Workspace workspace)? openWorkspace,
-    TResult Function(Either<List<Workspace>, WorkspaceError> workspacesOrFail)?
+    TResult Function(Either<List<Workspace>, FlowyError> workspacesOrFail)?
         workspacesReveived,
     required TResult orElse(),
   }) {
@@ -553,7 +553,7 @@ abstract class $WorkspacesReceivedCopyWith<$Res> {
   factory $WorkspacesReceivedCopyWith(
           WorkspacesReceived value, $Res Function(WorkspacesReceived) then) =
       _$WorkspacesReceivedCopyWithImpl<$Res>;
-  $Res call({Either<List<Workspace>, WorkspaceError> workspacesOrFail});
+  $Res call({Either<List<Workspace>, FlowyError> workspacesOrFail});
 }
 
 /// @nodoc
@@ -575,7 +575,7 @@ class _$WorkspacesReceivedCopyWithImpl<$Res>
       workspacesOrFail == freezed
           ? _value.workspacesOrFail
           : workspacesOrFail // ignore: cast_nullable_to_non_nullable
-              as Either<List<Workspace>, WorkspaceError>,
+              as Either<List<Workspace>, FlowyError>,
     ));
   }
 }
@@ -586,7 +586,7 @@ class _$WorkspacesReceived implements WorkspacesReceived {
   const _$WorkspacesReceived(this.workspacesOrFail);
 
   @override
-  final Either<List<Workspace>, WorkspaceError> workspacesOrFail;
+  final Either<List<Workspace>, FlowyError> workspacesOrFail;
 
   @override
   String toString() {
@@ -619,7 +619,7 @@ class _$WorkspacesReceived implements WorkspacesReceived {
     required TResult Function(String name, String desc) createWorkspace,
     required TResult Function(Workspace workspace) openWorkspace,
     required TResult Function(
-            Either<List<Workspace>, WorkspaceError> workspacesOrFail)
+            Either<List<Workspace>, FlowyError> workspacesOrFail)
         workspacesReveived,
   }) {
     return workspacesReveived(workspacesOrFail);
@@ -631,7 +631,7 @@ class _$WorkspacesReceived implements WorkspacesReceived {
     TResult Function()? initial,
     TResult Function(String name, String desc)? createWorkspace,
     TResult Function(Workspace workspace)? openWorkspace,
-    TResult Function(Either<List<Workspace>, WorkspaceError> workspacesOrFail)?
+    TResult Function(Either<List<Workspace>, FlowyError> workspacesOrFail)?
         workspacesReveived,
   }) {
     return workspacesReveived?.call(workspacesOrFail);
@@ -643,7 +643,7 @@ class _$WorkspacesReceived implements WorkspacesReceived {
     TResult Function()? initial,
     TResult Function(String name, String desc)? createWorkspace,
     TResult Function(Workspace workspace)? openWorkspace,
-    TResult Function(Either<List<Workspace>, WorkspaceError> workspacesOrFail)?
+    TResult Function(Either<List<Workspace>, FlowyError> workspacesOrFail)?
         workspacesReveived,
     required TResult orElse(),
   }) {
@@ -693,10 +693,10 @@ class _$WorkspacesReceived implements WorkspacesReceived {
 
 abstract class WorkspacesReceived implements WelcomeEvent {
   const factory WorkspacesReceived(
-          Either<List<Workspace>, WorkspaceError> workspacesOrFail) =
+          Either<List<Workspace>, FlowyError> workspacesOrFail) =
       _$WorkspacesReceived;
 
-  Either<List<Workspace>, WorkspaceError> get workspacesOrFail =>
+  Either<List<Workspace>, FlowyError> get workspacesOrFail =>
       throw _privateConstructorUsedError;
   @JsonKey(ignore: true)
   $WorkspacesReceivedCopyWith<WorkspacesReceived> get copyWith =>
@@ -710,7 +710,7 @@ class _$WelcomeStateTearOff {
   _WelcomeState call(
       {required bool isLoading,
       required List<Workspace> workspaces,
-      required Either<Unit, WorkspaceError> successOrFailure}) {
+      required Either<Unit, FlowyError> successOrFailure}) {
     return _WelcomeState(
       isLoading: isLoading,
       workspaces: workspaces,
@@ -726,7 +726,7 @@ const $WelcomeState = _$WelcomeStateTearOff();
 mixin _$WelcomeState {
   bool get isLoading => throw _privateConstructorUsedError;
   List<Workspace> get workspaces => throw _privateConstructorUsedError;
-  Either<Unit, WorkspaceError> get successOrFailure =>
+  Either<Unit, FlowyError> get successOrFailure =>
       throw _privateConstructorUsedError;
 
   @JsonKey(ignore: true)
@@ -742,7 +742,7 @@ abstract class $WelcomeStateCopyWith<$Res> {
   $Res call(
       {bool isLoading,
       List<Workspace> workspaces,
-      Either<Unit, WorkspaceError> successOrFailure});
+      Either<Unit, FlowyError> successOrFailure});
 }
 
 /// @nodoc
@@ -771,7 +771,7 @@ class _$WelcomeStateCopyWithImpl<$Res> implements $WelcomeStateCopyWith<$Res> {
       successOrFailure: successOrFailure == freezed
           ? _value.successOrFailure
           : successOrFailure // ignore: cast_nullable_to_non_nullable
-              as Either<Unit, WorkspaceError>,
+              as Either<Unit, FlowyError>,
     ));
   }
 }
@@ -786,7 +786,7 @@ abstract class _$WelcomeStateCopyWith<$Res>
   $Res call(
       {bool isLoading,
       List<Workspace> workspaces,
-      Either<Unit, WorkspaceError> successOrFailure});
+      Either<Unit, FlowyError> successOrFailure});
 }
 
 /// @nodoc
@@ -817,7 +817,7 @@ class __$WelcomeStateCopyWithImpl<$Res> extends _$WelcomeStateCopyWithImpl<$Res>
       successOrFailure: successOrFailure == freezed
           ? _value.successOrFailure
           : successOrFailure // ignore: cast_nullable_to_non_nullable
-              as Either<Unit, WorkspaceError>,
+              as Either<Unit, FlowyError>,
     ));
   }
 }
@@ -835,7 +835,7 @@ class _$_WelcomeState implements _WelcomeState {
   @override
   final List<Workspace> workspaces;
   @override
-  final Either<Unit, WorkspaceError> successOrFailure;
+  final Either<Unit, FlowyError> successOrFailure;
 
   @override
   String toString() {
@@ -874,7 +874,7 @@ abstract class _WelcomeState implements WelcomeState {
   const factory _WelcomeState(
           {required bool isLoading,
           required List<Workspace> workspaces,
-          required Either<Unit, WorkspaceError> successOrFailure}) =
+          required Either<Unit, FlowyError> successOrFailure}) =
       _$_WelcomeState;
 
   @override
@@ -882,7 +882,7 @@ abstract class _WelcomeState implements WelcomeState {
   @override
   List<Workspace> get workspaces => throw _privateConstructorUsedError;
   @override
-  Either<Unit, WorkspaceError> get successOrFailure =>
+  Either<Unit, FlowyError> get successOrFailure =>
       throw _privateConstructorUsedError;
   @override
   @JsonKey(ignore: true)
diff --git a/frontend/app_flowy/lib/workspace/domain/i_app.dart b/frontend/app_flowy/lib/workspace/domain/i_app.dart
index 3073809dc5..0c0d76d0c9 100644
--- a/frontend/app_flowy/lib/workspace/domain/i_app.dart
+++ b/frontend/app_flowy/lib/workspace/domain/i_app.dart
@@ -1,18 +1,18 @@
 import 'package:flowy_sdk/protobuf/flowy-core-infra/protobuf.dart';
 import 'package:dartz/dartz.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 typedef AppUpdatedCallback = void Function(App app);
-typedef AppViewsChangeCallback = void Function(Either<List<View>, WorkspaceError> viewsOrFailed);
+typedef AppViewsChangeCallback = void Function(Either<List<View>, FlowyError> viewsOrFailed);
 
 abstract class IApp {
-  Future<Either<List<View>, WorkspaceError>> getViews();
+  Future<Either<List<View>, FlowyError>> getViews();
 
-  Future<Either<View, WorkspaceError>> createView({required String name, String? desc, required ViewType viewType});
+  Future<Either<View, FlowyError>> createView({required String name, String? desc, required ViewType viewType});
 
-  Future<Either<Unit, WorkspaceError>> delete();
+  Future<Either<Unit, FlowyError>> delete();
 
-  Future<Either<Unit, WorkspaceError>> rename(String newName);
+  Future<Either<Unit, FlowyError>> rename(String newName);
 }
 
 abstract class IAppListenr {
diff --git a/frontend/app_flowy/lib/workspace/domain/i_doc.dart b/frontend/app_flowy/lib/workspace/domain/i_doc.dart
index 14c99c5118..3d65996189 100644
--- a/frontend/app_flowy/lib/workspace/domain/i_doc.dart
+++ b/frontend/app_flowy/lib/workspace/domain/i_doc.dart
@@ -1,10 +1,10 @@
 import 'dart:async';
 import 'package:dartz/dartz.dart';
 import 'package:flowy_sdk/protobuf/flowy-collaboration/doc.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 abstract class IDoc {
-  Future<Either<DocDelta, WorkspaceError>> readDoc();
-  Future<Either<DocDelta, WorkspaceError>> composeDelta({required String json});
-  Future<Either<Unit, WorkspaceError>> closeDoc();
+  Future<Either<DocDelta, FlowyError>> readDoc();
+  Future<Either<DocDelta, FlowyError>> composeDelta({required String json});
+  Future<Either<Unit, FlowyError>> closeDoc();
 }
diff --git a/frontend/app_flowy/lib/workspace/domain/i_share.dart b/frontend/app_flowy/lib/workspace/domain/i_share.dart
index cd24047807..11f119e9db 100644
--- a/frontend/app_flowy/lib/workspace/domain/i_share.dart
+++ b/frontend/app_flowy/lib/workspace/domain/i_share.dart
@@ -1,12 +1,12 @@
 import 'dart:async';
 import 'package:dartz/dartz.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/protobuf.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 abstract class IShare {
-  Future<Either<ExportData, WorkspaceError>> exportText(String docId);
+  Future<Either<ExportData, FlowyError>> exportText(String docId);
 
-  Future<Either<ExportData, WorkspaceError>> exportMarkdown(String docId);
+  Future<Either<ExportData, FlowyError>> exportMarkdown(String docId);
 
-  Future<Either<ExportData, WorkspaceError>> exportURL(String docId);
+  Future<Either<ExportData, FlowyError>> exportURL(String docId);
 }
diff --git a/frontend/app_flowy/lib/workspace/domain/i_trash.dart b/frontend/app_flowy/lib/workspace/domain/i_trash.dart
index 5ab660f081..b72d815217 100644
--- a/frontend/app_flowy/lib/workspace/domain/i_trash.dart
+++ b/frontend/app_flowy/lib/workspace/domain/i_trash.dart
@@ -1,21 +1,21 @@
 import 'dart:async';
 import 'package:dartz/dartz.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/trash_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 abstract class ITrash {
-  Future<Either<List<Trash>, WorkspaceError>> readTrash();
+  Future<Either<List<Trash>, FlowyError>> readTrash();
 
-  Future<Either<Unit, WorkspaceError>> putback(String trashId);
+  Future<Either<Unit, FlowyError>> putback(String trashId);
 
-  Future<Either<Unit, WorkspaceError>> deleteViews(List<Tuple2<String, TrashType>> trashList);
+  Future<Either<Unit, FlowyError>> deleteViews(List<Tuple2<String, TrashType>> trashList);
 
-  Future<Either<Unit, WorkspaceError>> restoreAll();
+  Future<Either<Unit, FlowyError>> restoreAll();
 
-  Future<Either<Unit, WorkspaceError>> deleteAll();
+  Future<Either<Unit, FlowyError>> deleteAll();
 }
 
-typedef TrashUpdatedCallback = void Function(Either<List<Trash>, WorkspaceError> trashOrFailed);
+typedef TrashUpdatedCallback = void Function(Either<List<Trash>, FlowyError> trashOrFailed);
 
 abstract class ITrashListener {
   void start(TrashUpdatedCallback updateCallback);
diff --git a/frontend/app_flowy/lib/workspace/domain/i_user.dart b/frontend/app_flowy/lib/workspace/domain/i_user.dart
index 4fc5ecab1d..c035da9b3c 100644
--- a/frontend/app_flowy/lib/workspace/domain/i_user.dart
+++ b/frontend/app_flowy/lib/workspace/domain/i_user.dart
@@ -1,24 +1,22 @@
 import 'package:dartz/dartz.dart';
 import 'package:flowy_infra/notifier.dart';
-import 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-user-infra/protobuf.dart' show UserProfile;
 import 'package:flowy_sdk/protobuf/flowy-core-infra/workspace_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
-export 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart';
 export 'package:flowy_sdk/protobuf/flowy-user-infra/protobuf.dart' show UserProfile;
 
 abstract class IUser {
   UserProfile get user;
-  Future<Either<UserProfile, UserError>> fetchUserProfile(String userId);
-  Future<Either<List<Workspace>, WorkspaceError>> fetchWorkspaces();
-  Future<Either<Unit, WorkspaceError>> deleteWorkspace(String workspaceId);
-  Future<Either<Unit, UserError>> signOut();
-  Future<Either<Unit, UserError>> initUser();
+  Future<Either<UserProfile, FlowyError>> fetchUserProfile(String userId);
+  Future<Either<List<Workspace>, FlowyError>> fetchWorkspaces();
+  Future<Either<Unit, FlowyError>> deleteWorkspace(String workspaceId);
+  Future<Either<Unit, FlowyError>> signOut();
+  Future<Either<Unit, FlowyError>> initUser();
 }
 
-typedef UserProfileUpdatedNotifierValue = Either<UserProfile, UserError>;
-typedef AuthNotifierValue = Either<Unit, UserError>;
-typedef WorkspaceUpdatedNotifierValue = Either<List<Workspace>, WorkspaceError>;
+typedef UserProfileUpdatedNotifierValue = Either<UserProfile, FlowyError>;
+typedef AuthNotifierValue = Either<Unit, FlowyError>;
+typedef WorkspaceUpdatedNotifierValue = Either<List<Workspace>, FlowyError>;
 
 abstract class IUserListener {
   void start();
diff --git a/frontend/app_flowy/lib/workspace/domain/i_view.dart b/frontend/app_flowy/lib/workspace/domain/i_view.dart
index d982baf00f..5675dbda80 100644
--- a/frontend/app_flowy/lib/workspace/domain/i_view.dart
+++ b/frontend/app_flowy/lib/workspace/domain/i_view.dart
@@ -1,22 +1,22 @@
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_create.pb.dart';
 import 'package:dartz/dartz.dart';
 import 'package:flowy_infra/notifier.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
-typedef ViewUpdatedCallback = void Function(Either<View, WorkspaceError>);
+typedef ViewUpdatedCallback = void Function(Either<View, FlowyError>);
 
-typedef DeleteNotifierValue = Either<View, WorkspaceError>;
-typedef UpdateNotifierValue = Either<View, WorkspaceError>;
-typedef RestoreNotifierValue = Either<View, WorkspaceError>;
+typedef DeleteNotifierValue = Either<View, FlowyError>;
+typedef UpdateNotifierValue = Either<View, FlowyError>;
+typedef RestoreNotifierValue = Either<View, FlowyError>;
 
 abstract class IView {
   View get view;
 
-  Future<Either<Unit, WorkspaceError>> delete();
+  Future<Either<Unit, FlowyError>> delete();
 
-  Future<Either<View, WorkspaceError>> rename(String newName);
+  Future<Either<View, FlowyError>> rename(String newName);
 
-  Future<Either<Unit, WorkspaceError>> duplicate();
+  Future<Either<Unit, FlowyError>> duplicate();
 }
 
 abstract class IViewListener {
diff --git a/frontend/app_flowy/lib/workspace/domain/i_workspace.dart b/frontend/app_flowy/lib/workspace/domain/i_workspace.dart
index beb85d0115..0b9e016fb2 100644
--- a/frontend/app_flowy/lib/workspace/domain/i_workspace.dart
+++ b/frontend/app_flowy/lib/workspace/domain/i_workspace.dart
@@ -1,15 +1,15 @@
 import 'package:flowy_sdk/protobuf/flowy-core-infra/protobuf.dart';
 import 'package:dartz/dartz.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
-typedef WorkspaceAppsChangedCallback = void Function(Either<List<App>, WorkspaceError> appsOrFail);
+typedef WorkspaceAppsChangedCallback = void Function(Either<List<App>, FlowyError> appsOrFail);
 
 typedef WorkspaceUpdatedCallback = void Function(String name, String desc);
 
 abstract class IWorkspace {
-  Future<Either<App, WorkspaceError>> createApp({required String name, String? desc});
+  Future<Either<App, FlowyError>> createApp({required String name, String? desc});
 
-  Future<Either<List<App>, WorkspaceError>> getApps();
+  Future<Either<List<App>, FlowyError>> getApps();
 }
 
 abstract class IWorkspaceListener {
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/i_app_impl.dart b/frontend/app_flowy/lib/workspace/infrastructure/i_app_impl.dart
index 2dec77f617..2960f6acec 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/i_app_impl.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/i_app_impl.dart
@@ -2,7 +2,7 @@ import 'package:app_flowy/workspace/infrastructure/repos/app_repo.dart';
 import 'package:dartz/dartz.dart';
 import 'package:app_flowy/workspace/domain/i_app.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 export 'package:app_flowy/workspace/domain/i_app.dart';
 
 class IAppImpl extends IApp {
@@ -12,12 +12,12 @@ class IAppImpl extends IApp {
   });
 
   @override
-  Future<Either<List<View>, WorkspaceError>> getViews() {
+  Future<Either<List<View>, FlowyError>> getViews() {
     return repo.getViews();
   }
 
   @override
-  Future<Either<View, WorkspaceError>> createView({required String name, String? desc, required ViewType viewType}) {
+  Future<Either<View, FlowyError>> createView({required String name, String? desc, required ViewType viewType}) {
     return repo.createView(name, desc ?? "", viewType).then((result) {
       return result.fold(
         (view) => left(view),
@@ -27,12 +27,12 @@ class IAppImpl extends IApp {
   }
 
   @override
-  Future<Either<Unit, WorkspaceError>> delete() {
+  Future<Either<Unit, FlowyError>> delete() {
     return repo.delete();
   }
 
   @override
-  Future<Either<Unit, WorkspaceError>> rename(String newName) {
+  Future<Either<Unit, FlowyError>> rename(String newName) {
     return repo.updateApp(name: newName);
   }
 }
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/i_doc_impl.dart b/frontend/app_flowy/lib/workspace/infrastructure/i_doc_impl.dart
index a1f281bea0..d188b579f8 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/i_doc_impl.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/i_doc_impl.dart
@@ -5,7 +5,7 @@ import 'package:dartz/dartz.dart';
 import 'package:app_flowy/workspace/domain/i_doc.dart';
 import 'package:app_flowy/workspace/infrastructure/repos/doc_repo.dart';
 import 'package:flowy_sdk/protobuf/flowy-collaboration/doc.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 class IDocImpl extends IDoc {
   DocRepository repo;
@@ -13,18 +13,18 @@ class IDocImpl extends IDoc {
   IDocImpl({required this.repo});
 
   @override
-  Future<Either<Unit, WorkspaceError>> closeDoc() {
+  Future<Either<Unit, FlowyError>> closeDoc() {
     return repo.closeDoc();
   }
 
   @override
-  Future<Either<DocDelta, WorkspaceError>> readDoc() async {
+  Future<Either<DocDelta, FlowyError>> readDoc() async {
     final docOrFail = await repo.readDoc();
     return docOrFail;
   }
 
   @override
-  Future<Either<DocDelta, WorkspaceError>> composeDelta({required String json}) {
+  Future<Either<DocDelta, FlowyError>> composeDelta({required String json}) {
     return repo.composeDelta(data: json);
   }
 }
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/i_share_impl.dart b/frontend/app_flowy/lib/workspace/infrastructure/i_share_impl.dart
index 12ed9722c4..5b2b4bc20d 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/i_share_impl.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/i_share_impl.dart
@@ -1,6 +1,6 @@
 import 'package:app_flowy/workspace/domain/i_share.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/protobuf.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:dartz/dartz.dart';
 
 import 'repos/share_repo.dart';
@@ -11,17 +11,17 @@ class IShareImpl extends IShare {
   IShareImpl({required this.repo});
 
   @override
-  Future<Either<ExportData, WorkspaceError>> exportText(String docId) {
+  Future<Either<ExportData, FlowyError>> exportText(String docId) {
     return repo.export(docId, ExportType.Text);
   }
 
   @override
-  Future<Either<ExportData, WorkspaceError>> exportMarkdown(String docId) {
+  Future<Either<ExportData, FlowyError>> exportMarkdown(String docId) {
     return repo.export(docId, ExportType.Markdown);
   }
 
   @override
-  Future<Either<ExportData, WorkspaceError>> exportURL(String docId) {
+  Future<Either<ExportData, FlowyError>> exportURL(String docId) {
     return repo.export(docId, ExportType.Link);
   }
 }
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/i_trash_impl.dart b/frontend/app_flowy/lib/workspace/infrastructure/i_trash_impl.dart
index 26a44ba169..c20c3c639a 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/i_trash_impl.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/i_trash_impl.dart
@@ -2,7 +2,7 @@ import 'package:app_flowy/workspace/domain/i_trash.dart';
 import 'package:app_flowy/workspace/infrastructure/repos/trash_repo.dart';
 import 'package:dartz/dartz.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/trash_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 class ITrashImpl implements ITrash {
   TrashRepo repo;
@@ -10,7 +10,7 @@ class ITrashImpl implements ITrash {
   ITrashImpl({required this.repo});
 
   @override
-  Future<Either<List<Trash>, WorkspaceError>> readTrash() {
+  Future<Either<List<Trash>, FlowyError>> readTrash() {
     return repo.readTrash().then((result) {
       return result.fold(
         (repeatedTrash) => left(repeatedTrash.items),
@@ -20,22 +20,22 @@ class ITrashImpl implements ITrash {
   }
 
   @override
-  Future<Either<Unit, WorkspaceError>> putback(String trashId) {
+  Future<Either<Unit, FlowyError>> putback(String trashId) {
     return repo.putback(trashId);
   }
 
   @override
-  Future<Either<Unit, WorkspaceError>> deleteAll() {
+  Future<Either<Unit, FlowyError>> deleteAll() {
     return repo.deleteAll();
   }
 
   @override
-  Future<Either<Unit, WorkspaceError>> restoreAll() {
+  Future<Either<Unit, FlowyError>> restoreAll() {
     return repo.restoreAll();
   }
 
   @override
-  Future<Either<Unit, WorkspaceError>> deleteViews(List<Tuple2<String, TrashType>> trashList) {
+  Future<Either<Unit, FlowyError>> deleteViews(List<Tuple2<String, TrashType>> trashList) {
     return repo.deleteViews(trashList);
   }
 }
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/i_user_impl.dart b/frontend/app_flowy/lib/workspace/infrastructure/i_user_impl.dart
index 08d7e3e12e..73e85d1b9f 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/i_user_impl.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/i_user_impl.dart
@@ -10,7 +10,7 @@ import 'package:flowy_sdk/protobuf/flowy-user-infra/errors.pb.dart';
 // import 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart' as user_error;
 import 'package:flowy_sdk/protobuf/flowy-user/observable.pb.dart' as user;
 import 'package:flowy_sdk/protobuf/flowy-core-infra/workspace_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core/observable.pb.dart';
 export 'package:app_flowy/workspace/domain/i_user.dart';
 export 'package:app_flowy/workspace/infrastructure/repos/user_repo.dart';
@@ -24,17 +24,17 @@ class IUserImpl extends IUser {
   });
 
   @override
-  Future<Either<Unit, WorkspaceError>> deleteWorkspace(String workspaceId) {
+  Future<Either<Unit, FlowyError>> deleteWorkspace(String workspaceId) {
     return repo.deleteWorkspace(workspaceId: workspaceId);
   }
 
   @override
-  Future<Either<UserProfile, UserError>> fetchUserProfile(String userId) {
+  Future<Either<UserProfile, FlowyError>> fetchUserProfile(String userId) {
     return repo.fetchUserProfile(userId: userId);
   }
 
   @override
-  Future<Either<Unit, UserError>> signOut() {
+  Future<Either<Unit, FlowyError>> signOut() {
     return repo.signOut();
   }
 
@@ -42,12 +42,12 @@ class IUserImpl extends IUser {
   UserProfile get user => repo.user;
 
   @override
-  Future<Either<List<Workspace>, WorkspaceError>> fetchWorkspaces() {
+  Future<Either<List<Workspace>, FlowyError>> fetchWorkspaces() {
     return repo.getWorkspaces();
   }
 
   @override
-  Future<Either<Unit, UserError>> initUser() {
+  Future<Either<Unit, FlowyError>> initUser() {
     return repo.initUser();
   }
 }
@@ -88,7 +88,7 @@ class IUserListenerImpl extends IUserListener {
     await _subscription?.cancel();
   }
 
-  void _notificationCallback(WorkspaceNotification ty, Either<Uint8List, WorkspaceError> result) {
+  void _notificationCallback(WorkspaceNotification ty, Either<Uint8List, FlowyError> result) {
     switch (ty) {
       case WorkspaceNotification.UserCreateWorkspace:
       case WorkspaceNotification.UserDeleteWorkspace:
@@ -101,7 +101,7 @@ class IUserListenerImpl extends IUserListener {
       case WorkspaceNotification.UserUnauthorized:
         result.fold(
           (_) {},
-          (error) => authDidChangedNotifier.value = right(UserError.create()..code = ErrorCode.UserUnauthorized.value),
+          (error) => authDidChangedNotifier.value = right(FlowyError.create()..code = ErrorCode.UserUnauthorized.value),
         );
         break;
       default:
@@ -109,7 +109,7 @@ class IUserListenerImpl extends IUserListener {
     }
   }
 
-  void _userNotificationCallback(user.UserNotification ty, Either<Uint8List, UserError> result) {
+  void _userNotificationCallback(user.UserNotification ty, Either<Uint8List, FlowyError> result) {
     switch (ty) {
       case user.UserNotification.UserUnauthorized:
         result.fold(
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/i_view_impl.dart b/frontend/app_flowy/lib/workspace/infrastructure/i_view_impl.dart
index 84bc049b33..3d1b4c3232 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/i_view_impl.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/i_view_impl.dart
@@ -3,7 +3,7 @@ import 'package:app_flowy/workspace/infrastructure/repos/view_repo.dart';
 import 'package:flowy_infra/notifier.dart';
 import 'package:dartz/dartz.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 class IViewImpl extends IView {
   ViewRepository repo;
@@ -14,7 +14,7 @@ class IViewImpl extends IView {
   View get view => repo.view;
 
   @override
-  Future<Either<Unit, WorkspaceError>> delete() {
+  Future<Either<Unit, FlowyError>> delete() {
     return repo.delete().then((result) {
       return result.fold(
         (_) => left(unit),
@@ -24,12 +24,12 @@ class IViewImpl extends IView {
   }
 
   @override
-  Future<Either<View, WorkspaceError>> rename(String newName) {
+  Future<Either<View, FlowyError>> rename(String newName) {
     return repo.updateView(name: newName);
   }
 
   @override
-  Future<Either<Unit, WorkspaceError>> duplicate() {
+  Future<Either<Unit, FlowyError>> duplicate() {
     return repo.duplicate();
   }
 }
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/i_workspace_impl.dart b/frontend/app_flowy/lib/workspace/infrastructure/i_workspace_impl.dart
index a90e9b62c3..8be815a11d 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/i_workspace_impl.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/i_workspace_impl.dart
@@ -2,7 +2,7 @@ import 'package:app_flowy/workspace/domain/i_workspace.dart';
 import 'package:app_flowy/workspace/infrastructure/repos/workspace_repo.dart';
 import 'package:dartz/dartz.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/app_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 export 'package:app_flowy/workspace/domain/i_workspace.dart';
 
@@ -13,12 +13,12 @@ class IWorkspaceImpl extends IWorkspace {
   });
 
   @override
-  Future<Either<App, WorkspaceError>> createApp({required String name, String? desc}) {
+  Future<Either<App, FlowyError>> createApp({required String name, String? desc}) {
     return repo.createApp(name, desc ?? "");
   }
 
   @override
-  Future<Either<List<App>, WorkspaceError>> getApps() {
+  Future<Either<List<App>, FlowyError>> getApps() {
     return repo.getApps().then((result) {
       return result.fold(
         (apps) => left(apps),
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/repos/app_repo.dart b/frontend/app_flowy/lib/workspace/infrastructure/repos/app_repo.dart
index d5cb40af1c..836ac852cf 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/repos/app_repo.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/repos/app_repo.dart
@@ -9,7 +9,7 @@ import 'package:flowy_sdk/protobuf/flowy-core-infra/app_create.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/app_query.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/app_update.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core/observable.pb.dart';
 import 'package:flowy_sdk/rust_stream.dart';
 import 'helper.dart';
@@ -20,13 +20,13 @@ class AppRepository {
     required this.appId,
   });
 
-  Future<Either<App, WorkspaceError>> getAppDesc() {
+  Future<Either<App, FlowyError>> getAppDesc() {
     final request = QueryAppRequest.create()..appIds.add(appId);
 
     return WorkspaceEventReadApp(request).send();
   }
 
-  Future<Either<View, WorkspaceError>> createView(String name, String desc, ViewType viewType) {
+  Future<Either<View, FlowyError>> createView(String name, String desc, ViewType viewType) {
     final request = CreateViewRequest.create()
       ..belongToId = appId
       ..name = name
@@ -36,7 +36,7 @@ class AppRepository {
     return WorkspaceEventCreateView(request).send();
   }
 
-  Future<Either<List<View>, WorkspaceError>> getViews() {
+  Future<Either<List<View>, FlowyError>> getViews() {
     final request = QueryAppRequest.create()..appIds.add(appId);
 
     return WorkspaceEventReadApp(request).send().then((result) {
@@ -47,12 +47,12 @@ class AppRepository {
     });
   }
 
-  Future<Either<Unit, WorkspaceError>> delete() {
+  Future<Either<Unit, FlowyError>> delete() {
     final request = QueryAppRequest.create()..appIds.add(appId);
     return WorkspaceEventDeleteApp(request).send();
   }
 
-  Future<Either<Unit, WorkspaceError>> updateApp({String? name}) {
+  Future<Either<Unit, FlowyError>> updateApp({String? name}) {
     UpdateAppRequest request = UpdateAppRequest.create()..appId = appId;
 
     if (name != null) {
@@ -80,7 +80,7 @@ class AppListenerRepository {
     _subscription = RustStreamReceiver.listen((observable) => _parser.parse(observable));
   }
 
-  void _bservableCallback(WorkspaceNotification ty, Either<Uint8List, WorkspaceError> result) {
+  void _bservableCallback(WorkspaceNotification ty, Either<Uint8List, FlowyError> result) {
     switch (ty) {
       case WorkspaceNotification.AppViewsChanged:
         if (_viewsChanged != null) {
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/repos/doc_repo.dart b/frontend/app_flowy/lib/workspace/infrastructure/repos/doc_repo.dart
index 696143f6fd..76d640d60d 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/repos/doc_repo.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/repos/doc_repo.dart
@@ -2,7 +2,7 @@ import 'package:dartz/dartz.dart';
 import 'package:flowy_sdk/dispatch/dispatch.dart';
 import 'package:flowy_sdk/protobuf/flowy-collaboration/doc.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_query.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 class DocRepository {
   final String docId;
@@ -10,19 +10,19 @@ class DocRepository {
     required this.docId,
   });
 
-  Future<Either<DocDelta, WorkspaceError>> readDoc() {
+  Future<Either<DocDelta, FlowyError>> readDoc() {
     final request = QueryViewRequest(viewIds: [docId]);
     return WorkspaceEventOpenView(request).send();
   }
 
-  Future<Either<DocDelta, WorkspaceError>> composeDelta({required String data}) {
+  Future<Either<DocDelta, FlowyError>> composeDelta({required String data}) {
     final request = DocDelta.create()
       ..docId = docId
       ..data = data;
     return WorkspaceEventApplyDocDelta(request).send();
   }
 
-  Future<Either<Unit, WorkspaceError>> closeDoc() {
+  Future<Either<Unit, FlowyError>> closeDoc() {
     final request = QueryViewRequest(viewIds: [docId]);
     return WorkspaceEventCloseView(request).send();
   }
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/repos/helper.dart b/frontend/app_flowy/lib/workspace/infrastructure/repos/helper.dart
index 2110e6f725..2894bdd771 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/repos/helper.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/repos/helper.dart
@@ -2,30 +2,30 @@ import 'dart:typed_data';
 import 'package:flowy_sdk/protobuf/dart-notify/protobuf.dart';
 import 'package:flowy_sdk/protobuf/flowy-user/protobuf.dart';
 import 'package:dartz/dartz.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core/observable.pb.dart';
 
-typedef UserNotificationCallback = void Function(UserNotification, Either<Uint8List, UserError>);
+typedef UserNotificationCallback = void Function(UserNotification, Either<Uint8List, FlowyError>);
 
-class UserNotificationParser extends NotificationParser<UserNotification, UserError> {
+class UserNotificationParser extends NotificationParser<UserNotification, FlowyError> {
   UserNotificationParser({required String id, required UserNotificationCallback callback})
       : super(
           id: id,
           callback: callback,
           tyParser: (ty) => UserNotification.valueOf(ty),
-          errorParser: (bytes) => UserError.fromBuffer(bytes),
+          errorParser: (bytes) => FlowyError.fromBuffer(bytes),
         );
 }
 
-typedef NotificationCallback = void Function(WorkspaceNotification, Either<Uint8List, WorkspaceError>);
+typedef NotificationCallback = void Function(WorkspaceNotification, Either<Uint8List, FlowyError>);
 
-class WorkspaceNotificationParser extends NotificationParser<WorkspaceNotification, WorkspaceError> {
+class WorkspaceNotificationParser extends NotificationParser<WorkspaceNotification, FlowyError> {
   WorkspaceNotificationParser({String? id, required NotificationCallback callback})
       : super(
           id: id,
           callback: callback,
           tyParser: (ty) => WorkspaceNotification.valueOf(ty),
-          errorParser: (bytes) => WorkspaceError.fromBuffer(bytes),
+          errorParser: (bytes) => FlowyError.fromBuffer(bytes),
         );
 }
 
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/repos/share_repo.dart b/frontend/app_flowy/lib/workspace/infrastructure/repos/share_repo.dart
index 85f8334316..8289f4a97c 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/repos/share_repo.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/repos/share_repo.dart
@@ -2,10 +2,10 @@ import 'dart:async';
 import 'package:dartz/dartz.dart';
 import 'package:flowy_sdk/dispatch/dispatch.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/protobuf.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 class ShareRepo {
-  Future<Either<ExportData, WorkspaceError>> export(String docId, ExportType type) {
+  Future<Either<ExportData, FlowyError>> export(String docId, ExportType type) {
     final request = ExportRequest.create()
       ..docId = docId
       ..exportType = type;
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/repos/trash_repo.dart b/frontend/app_flowy/lib/workspace/infrastructure/repos/trash_repo.dart
index 821c1db7af..9656f1432d 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/repos/trash_repo.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/repos/trash_repo.dart
@@ -6,22 +6,22 @@ import 'package:dartz/dartz.dart';
 import 'package:flowy_sdk/dispatch/dispatch.dart';
 import 'package:flowy_sdk/protobuf/dart-notify/subject.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/trash_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core/observable.pb.dart';
 import 'package:flowy_sdk/rust_stream.dart';
 
 class TrashRepo {
-  Future<Either<RepeatedTrash, WorkspaceError>> readTrash() {
+  Future<Either<RepeatedTrash, FlowyError>> readTrash() {
     return WorkspaceEventReadTrash().send();
   }
 
-  Future<Either<Unit, WorkspaceError>> putback(String trashId) {
+  Future<Either<Unit, FlowyError>> putback(String trashId) {
     final id = TrashIdentifier.create()..id = trashId;
 
     return WorkspaceEventPutbackTrash(id).send();
   }
 
-  Future<Either<Unit, WorkspaceError>> deleteViews(List<Tuple2<String, TrashType>> trashList) {
+  Future<Either<Unit, FlowyError>> deleteViews(List<Tuple2<String, TrashType>> trashList) {
     final items = trashList.map((trash) {
       return TrashIdentifier.create()
         ..id = trash.value1
@@ -32,11 +32,11 @@ class TrashRepo {
     return WorkspaceEventDeleteTrash(trashIdentifiers).send();
   }
 
-  Future<Either<Unit, WorkspaceError>> restoreAll() {
+  Future<Either<Unit, FlowyError>> restoreAll() {
     return WorkspaceEventRestoreAll().send();
   }
 
-  Future<Either<Unit, WorkspaceError>> deleteAll() {
+  Future<Either<Unit, FlowyError>> deleteAll() {
     return WorkspaceEventDeleteAll().send();
   }
 }
@@ -52,7 +52,7 @@ class TrashListenerRepo {
     _subscription = RustStreamReceiver.listen((observable) => _parser.parse(observable));
   }
 
-  void _bservableCallback(WorkspaceNotification ty, Either<Uint8List, WorkspaceError> result) {
+  void _bservableCallback(WorkspaceNotification ty, Either<Uint8List, FlowyError> result) {
     switch (ty) {
       case WorkspaceNotification.TrashUpdated:
         if (_trashUpdated != null) {
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/repos/user_repo.dart b/frontend/app_flowy/lib/workspace/infrastructure/repos/user_repo.dart
index 2d5411739a..b35a771b47 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/repos/user_repo.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/repos/user_repo.dart
@@ -4,7 +4,7 @@ import 'package:flowy_sdk/dispatch/dispatch.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/workspace_create.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/workspace_query.pb.dart';
 import 'package:app_flowy/workspace/domain/i_user.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 
 class UserRepo {
   final UserProfile user;
@@ -12,23 +12,23 @@ class UserRepo {
     required this.user,
   });
 
-  Future<Either<UserProfile, UserError>> fetchUserProfile({required String userId}) {
+  Future<Either<UserProfile, FlowyError>> fetchUserProfile({required String userId}) {
     return UserEventGetUserProfile().send();
   }
 
-  Future<Either<Unit, WorkspaceError>> deleteWorkspace({required String workspaceId}) {
+  Future<Either<Unit, FlowyError>> deleteWorkspace({required String workspaceId}) {
     throw UnimplementedError();
   }
 
-  Future<Either<Unit, UserError>> signOut() {
+  Future<Either<Unit, FlowyError>> signOut() {
     return UserEventSignOut().send();
   }
 
-  Future<Either<Unit, UserError>> initUser() async {
+  Future<Either<Unit, FlowyError>> initUser() async {
     return UserEventInitUser().send();
   }
 
-  Future<Either<List<Workspace>, WorkspaceError>> getWorkspaces() {
+  Future<Either<List<Workspace>, FlowyError>> getWorkspaces() {
     final request = QueryWorkspaceRequest.create();
 
     return WorkspaceEventReadWorkspaces(request).send().then((result) {
@@ -39,7 +39,7 @@ class UserRepo {
     });
   }
 
-  Future<Either<Workspace, WorkspaceError>> openWorkspace(String workspaceId) {
+  Future<Either<Workspace, FlowyError>> openWorkspace(String workspaceId) {
     final request = QueryWorkspaceRequest.create()..workspaceId = workspaceId;
     return WorkspaceEventOpenWorkspace(request).send().then((result) {
       return result.fold(
@@ -49,7 +49,7 @@ class UserRepo {
     });
   }
 
-  Future<Either<Workspace, WorkspaceError>> createWorkspace(String name, String desc) {
+  Future<Either<Workspace, FlowyError>> createWorkspace(String name, String desc) {
     final request = CreateWorkspaceRequest.create()
       ..name = name
       ..desc = desc;
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/repos/view_repo.dart b/frontend/app_flowy/lib/workspace/infrastructure/repos/view_repo.dart
index 96d19d80b8..2a2629f09f 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/repos/view_repo.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/repos/view_repo.dart
@@ -6,7 +6,7 @@ import 'package:flowy_sdk/protobuf/dart-notify/subject.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_create.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_query.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_update.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core/observable.pb.dart';
 import 'package:flowy_sdk/rust_stream.dart';
 
@@ -21,12 +21,12 @@ class ViewRepository {
     required this.view,
   });
 
-  Future<Either<View, WorkspaceError>> readView() {
+  Future<Either<View, FlowyError>> readView() {
     final request = QueryViewRequest(viewIds: [view.id]);
     return WorkspaceEventReadView(request).send();
   }
 
-  Future<Either<View, WorkspaceError>> updateView({String? name, String? desc}) {
+  Future<Either<View, FlowyError>> updateView({String? name, String? desc}) {
     final request = UpdateViewRequest.create()..viewId = view.id;
 
     if (name != null) {
@@ -40,12 +40,12 @@ class ViewRepository {
     return WorkspaceEventUpdateView(request).send();
   }
 
-  Future<Either<Unit, WorkspaceError>> delete() {
+  Future<Either<Unit, FlowyError>> delete() {
     final request = QueryViewRequest.create()..viewIds.add(view.id);
     return WorkspaceEventDeleteView(request).send();
   }
 
-  Future<Either<Unit, WorkspaceError>> duplicate() {
+  Future<Either<Unit, FlowyError>> duplicate() {
     final request = QueryViewRequest.create()..viewIds.add(view.id);
     return WorkspaceEventDuplicateView(request).send();
   }
@@ -74,7 +74,7 @@ class ViewListenerRepository {
     _subscription = RustStreamReceiver.listen((observable) => _parser.parse(observable));
   }
 
-  void _handleObservableType(WorkspaceNotification ty, Either<Uint8List, WorkspaceError> result) {
+  void _handleObservableType(WorkspaceNotification ty, Either<Uint8List, FlowyError> result) {
     switch (ty) {
       case WorkspaceNotification.ViewUpdated:
         result.fold(
diff --git a/frontend/app_flowy/lib/workspace/infrastructure/repos/workspace_repo.dart b/frontend/app_flowy/lib/workspace/infrastructure/repos/workspace_repo.dart
index c9d192c370..c14a5d75d1 100644
--- a/frontend/app_flowy/lib/workspace/infrastructure/repos/workspace_repo.dart
+++ b/frontend/app_flowy/lib/workspace/infrastructure/repos/workspace_repo.dart
@@ -10,7 +10,7 @@ import 'package:flowy_sdk/protobuf/flowy-user-infra/protobuf.dart' show UserProf
 import 'package:flowy_sdk/protobuf/flowy-core-infra/app_create.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/workspace_create.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/workspace_query.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core/observable.pb.dart';
 import 'package:flowy_sdk/rust_stream.dart';
 
@@ -27,7 +27,7 @@ class WorkspaceRepo {
     required this.workspaceId,
   });
 
-  Future<Either<App, WorkspaceError>> createApp(String appName, String desc) {
+  Future<Either<App, FlowyError>> createApp(String appName, String desc) {
     final request = CreateAppRequest.create()
       ..name = appName
       ..workspaceId = workspaceId
@@ -35,7 +35,7 @@ class WorkspaceRepo {
     return WorkspaceEventCreateApp(request).send();
   }
 
-  Future<Either<Workspace, WorkspaceError>> getWorkspace() {
+  Future<Either<Workspace, FlowyError>> getWorkspace() {
     final request = QueryWorkspaceRequest.create()..workspaceId = workspaceId;
     return WorkspaceEventReadWorkspaces(request).send().then((result) {
       return result.fold(
@@ -43,7 +43,7 @@ class WorkspaceRepo {
           assert(workspaces.items.length == 1);
 
           if (workspaces.items.isEmpty) {
-            return right(WorkspaceError.create()..msg = LocaleKeys.workspace_notFoundError.tr());
+            return right(FlowyError.create()..msg = LocaleKeys.workspace_notFoundError.tr());
           } else {
             return left(workspaces.items[0]);
           }
@@ -53,7 +53,7 @@ class WorkspaceRepo {
     });
   }
 
-  Future<Either<List<App>, WorkspaceError>> getApps() {
+  Future<Either<List<App>, FlowyError>> getApps() {
     final request = QueryWorkspaceRequest.create()..workspaceId = workspaceId;
     return WorkspaceEventReadWorkspaceApps(request).send().then((result) {
       return result.fold(
@@ -94,7 +94,7 @@ class WorkspaceListenerRepo {
     _subscription = RustStreamReceiver.listen((observable) => _parser.parse(observable));
   }
 
-  void _handleObservableType(WorkspaceNotification ty, Either<Uint8List, WorkspaceError> result) {
+  void _handleObservableType(WorkspaceNotification ty, Either<Uint8List, FlowyError> result) {
     switch (ty) {
       case WorkspaceNotification.WorkspaceUpdated:
         if (_update != null) {
diff --git a/frontend/app_flowy/lib/workspace/presentation/stack_page/doc/doc_stack_page.dart b/frontend/app_flowy/lib/workspace/presentation/stack_page/doc/doc_stack_page.dart
index 65ca557600..d6d960423b 100644
--- a/frontend/app_flowy/lib/workspace/presentation/stack_page/doc/doc_stack_page.dart
+++ b/frontend/app_flowy/lib/workspace/presentation/stack_page/doc/doc_stack_page.dart
@@ -14,7 +14,7 @@ import 'package:flowy_infra_ui/widget/rounded_button.dart';
 import 'package:flowy_log/flowy_log.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/export.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core-infra/view_create.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
+import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flutter/material.dart';
 import 'package:dartz/dartz.dart' as dartz;
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -200,7 +200,7 @@ class DocShareButton extends StatelessWidget {
     }
   }
 
-  void _handleExportError(WorkspaceError error) {}
+  void _handleExportError(FlowyError error) {}
 
   void _showActionList(BuildContext context, Offset offset) {
     final actionList = ShareActions(onSelected: (result) {
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/dispatch/code_gen.dart b/frontend/app_flowy/packages/flowy_sdk/lib/dispatch/code_gen.dart
index b3ffb53705..fdf3cddf4f 100644
--- a/frontend/app_flowy/packages/flowy_sdk/lib/dispatch/code_gen.dart
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/dispatch/code_gen.dart
@@ -6,7 +6,7 @@ class WorkspaceEventCreateWorkspace {
      CreateWorkspaceRequest request;
      WorkspaceEventCreateWorkspace(this.request);
 
-    Future<Either<Workspace, WorkspaceError>> send() {
+    Future<Either<Workspace, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.CreateWorkspace.toString()
           ..payload = requestToBytes(this.request);
@@ -14,7 +14,7 @@ class WorkspaceEventCreateWorkspace {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(Workspace.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -22,13 +22,13 @@ class WorkspaceEventCreateWorkspace {
 class WorkspaceEventReadCurWorkspace {
     WorkspaceEventReadCurWorkspace();
 
-    Future<Either<CurrentWorkspaceSetting, WorkspaceError>> send() {
+    Future<Either<CurrentWorkspaceSetting, FlowyError>> send() {
      final request = FFIRequest.create()
         ..event = WorkspaceEvent.ReadCurWorkspace.toString();
 
      return Dispatch.asyncRequest(request).then((bytesResult) => bytesResult.fold(
         (okBytes) => left(CurrentWorkspaceSetting.fromBuffer(okBytes)),
-        (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+        (errBytes) => right(FlowyError.fromBuffer(errBytes)),
       ));
     }
 }
@@ -37,7 +37,7 @@ class WorkspaceEventReadWorkspaces {
      QueryWorkspaceRequest request;
      WorkspaceEventReadWorkspaces(this.request);
 
-    Future<Either<RepeatedWorkspace, WorkspaceError>> send() {
+    Future<Either<RepeatedWorkspace, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.ReadWorkspaces.toString()
           ..payload = requestToBytes(this.request);
@@ -45,7 +45,7 @@ class WorkspaceEventReadWorkspaces {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(RepeatedWorkspace.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -54,7 +54,7 @@ class WorkspaceEventDeleteWorkspace {
      QueryWorkspaceRequest request;
      WorkspaceEventDeleteWorkspace(this.request);
 
-    Future<Either<Unit, WorkspaceError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.DeleteWorkspace.toString()
           ..payload = requestToBytes(this.request);
@@ -62,7 +62,7 @@ class WorkspaceEventDeleteWorkspace {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (bytes) => left(unit),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -71,7 +71,7 @@ class WorkspaceEventOpenWorkspace {
      QueryWorkspaceRequest request;
      WorkspaceEventOpenWorkspace(this.request);
 
-    Future<Either<Workspace, WorkspaceError>> send() {
+    Future<Either<Workspace, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.OpenWorkspace.toString()
           ..payload = requestToBytes(this.request);
@@ -79,7 +79,7 @@ class WorkspaceEventOpenWorkspace {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(Workspace.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -88,7 +88,7 @@ class WorkspaceEventReadWorkspaceApps {
      QueryWorkspaceRequest request;
      WorkspaceEventReadWorkspaceApps(this.request);
 
-    Future<Either<RepeatedApp, WorkspaceError>> send() {
+    Future<Either<RepeatedApp, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.ReadWorkspaceApps.toString()
           ..payload = requestToBytes(this.request);
@@ -96,7 +96,7 @@ class WorkspaceEventReadWorkspaceApps {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(RepeatedApp.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -105,7 +105,7 @@ class WorkspaceEventCreateApp {
      CreateAppRequest request;
      WorkspaceEventCreateApp(this.request);
 
-    Future<Either<App, WorkspaceError>> send() {
+    Future<Either<App, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.CreateApp.toString()
           ..payload = requestToBytes(this.request);
@@ -113,7 +113,7 @@ class WorkspaceEventCreateApp {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(App.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -122,7 +122,7 @@ class WorkspaceEventDeleteApp {
      QueryAppRequest request;
      WorkspaceEventDeleteApp(this.request);
 
-    Future<Either<Unit, WorkspaceError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.DeleteApp.toString()
           ..payload = requestToBytes(this.request);
@@ -130,7 +130,7 @@ class WorkspaceEventDeleteApp {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (bytes) => left(unit),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -139,7 +139,7 @@ class WorkspaceEventReadApp {
      QueryAppRequest request;
      WorkspaceEventReadApp(this.request);
 
-    Future<Either<App, WorkspaceError>> send() {
+    Future<Either<App, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.ReadApp.toString()
           ..payload = requestToBytes(this.request);
@@ -147,7 +147,7 @@ class WorkspaceEventReadApp {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(App.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -156,7 +156,7 @@ class WorkspaceEventUpdateApp {
      UpdateAppRequest request;
      WorkspaceEventUpdateApp(this.request);
 
-    Future<Either<Unit, WorkspaceError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.UpdateApp.toString()
           ..payload = requestToBytes(this.request);
@@ -164,7 +164,7 @@ class WorkspaceEventUpdateApp {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (bytes) => left(unit),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -173,7 +173,7 @@ class WorkspaceEventCreateView {
      CreateViewRequest request;
      WorkspaceEventCreateView(this.request);
 
-    Future<Either<View, WorkspaceError>> send() {
+    Future<Either<View, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.CreateView.toString()
           ..payload = requestToBytes(this.request);
@@ -181,7 +181,7 @@ class WorkspaceEventCreateView {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(View.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -190,7 +190,7 @@ class WorkspaceEventReadView {
      QueryViewRequest request;
      WorkspaceEventReadView(this.request);
 
-    Future<Either<View, WorkspaceError>> send() {
+    Future<Either<View, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.ReadView.toString()
           ..payload = requestToBytes(this.request);
@@ -198,7 +198,7 @@ class WorkspaceEventReadView {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(View.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -207,7 +207,7 @@ class WorkspaceEventUpdateView {
      UpdateViewRequest request;
      WorkspaceEventUpdateView(this.request);
 
-    Future<Either<View, WorkspaceError>> send() {
+    Future<Either<View, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.UpdateView.toString()
           ..payload = requestToBytes(this.request);
@@ -215,7 +215,7 @@ class WorkspaceEventUpdateView {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(View.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -224,7 +224,7 @@ class WorkspaceEventDeleteView {
      QueryViewRequest request;
      WorkspaceEventDeleteView(this.request);
 
-    Future<Either<Unit, WorkspaceError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.DeleteView.toString()
           ..payload = requestToBytes(this.request);
@@ -232,7 +232,7 @@ class WorkspaceEventDeleteView {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (bytes) => left(unit),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -241,7 +241,7 @@ class WorkspaceEventDuplicateView {
      QueryViewRequest request;
      WorkspaceEventDuplicateView(this.request);
 
-    Future<Either<Unit, WorkspaceError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.DuplicateView.toString()
           ..payload = requestToBytes(this.request);
@@ -249,7 +249,7 @@ class WorkspaceEventDuplicateView {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (bytes) => left(unit),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -257,13 +257,13 @@ class WorkspaceEventDuplicateView {
 class WorkspaceEventCopyLink {
     WorkspaceEventCopyLink();
 
-    Future<Either<Unit, WorkspaceError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
      final request = FFIRequest.create()
         ..event = WorkspaceEvent.CopyLink.toString();
 
      return Dispatch.asyncRequest(request).then((bytesResult) => bytesResult.fold(
         (bytes) => left(unit),
-        (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+        (errBytes) => right(FlowyError.fromBuffer(errBytes)),
       ));
     }
 }
@@ -272,7 +272,7 @@ class WorkspaceEventOpenView {
      QueryViewRequest request;
      WorkspaceEventOpenView(this.request);
 
-    Future<Either<DocDelta, WorkspaceError>> send() {
+    Future<Either<DocDelta, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.OpenView.toString()
           ..payload = requestToBytes(this.request);
@@ -280,7 +280,7 @@ class WorkspaceEventOpenView {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(DocDelta.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -289,7 +289,7 @@ class WorkspaceEventCloseView {
      QueryViewRequest request;
      WorkspaceEventCloseView(this.request);
 
-    Future<Either<Unit, WorkspaceError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.CloseView.toString()
           ..payload = requestToBytes(this.request);
@@ -297,7 +297,7 @@ class WorkspaceEventCloseView {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (bytes) => left(unit),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -305,13 +305,13 @@ class WorkspaceEventCloseView {
 class WorkspaceEventReadTrash {
     WorkspaceEventReadTrash();
 
-    Future<Either<RepeatedTrash, WorkspaceError>> send() {
+    Future<Either<RepeatedTrash, FlowyError>> send() {
      final request = FFIRequest.create()
         ..event = WorkspaceEvent.ReadTrash.toString();
 
      return Dispatch.asyncRequest(request).then((bytesResult) => bytesResult.fold(
         (okBytes) => left(RepeatedTrash.fromBuffer(okBytes)),
-        (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+        (errBytes) => right(FlowyError.fromBuffer(errBytes)),
       ));
     }
 }
@@ -320,7 +320,7 @@ class WorkspaceEventPutbackTrash {
      TrashIdentifier request;
      WorkspaceEventPutbackTrash(this.request);
 
-    Future<Either<Unit, WorkspaceError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.PutbackTrash.toString()
           ..payload = requestToBytes(this.request);
@@ -328,7 +328,7 @@ class WorkspaceEventPutbackTrash {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (bytes) => left(unit),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -337,7 +337,7 @@ class WorkspaceEventDeleteTrash {
      TrashIdentifiers request;
      WorkspaceEventDeleteTrash(this.request);
 
-    Future<Either<Unit, WorkspaceError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.DeleteTrash.toString()
           ..payload = requestToBytes(this.request);
@@ -345,7 +345,7 @@ class WorkspaceEventDeleteTrash {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (bytes) => left(unit),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -353,13 +353,13 @@ class WorkspaceEventDeleteTrash {
 class WorkspaceEventRestoreAll {
     WorkspaceEventRestoreAll();
 
-    Future<Either<Unit, WorkspaceError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
      final request = FFIRequest.create()
         ..event = WorkspaceEvent.RestoreAll.toString();
 
      return Dispatch.asyncRequest(request).then((bytesResult) => bytesResult.fold(
         (bytes) => left(unit),
-        (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+        (errBytes) => right(FlowyError.fromBuffer(errBytes)),
       ));
     }
 }
@@ -367,13 +367,13 @@ class WorkspaceEventRestoreAll {
 class WorkspaceEventDeleteAll {
     WorkspaceEventDeleteAll();
 
-    Future<Either<Unit, WorkspaceError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
      final request = FFIRequest.create()
         ..event = WorkspaceEvent.DeleteAll.toString();
 
      return Dispatch.asyncRequest(request).then((bytesResult) => bytesResult.fold(
         (bytes) => left(unit),
-        (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+        (errBytes) => right(FlowyError.fromBuffer(errBytes)),
       ));
     }
 }
@@ -382,7 +382,7 @@ class WorkspaceEventApplyDocDelta {
      DocDelta request;
      WorkspaceEventApplyDocDelta(this.request);
 
-    Future<Either<DocDelta, WorkspaceError>> send() {
+    Future<Either<DocDelta, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.ApplyDocDelta.toString()
           ..payload = requestToBytes(this.request);
@@ -390,7 +390,7 @@ class WorkspaceEventApplyDocDelta {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(DocDelta.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -399,7 +399,7 @@ class WorkspaceEventExportDocument {
      ExportRequest request;
      WorkspaceEventExportDocument(this.request);
 
-    Future<Either<ExportData, WorkspaceError>> send() {
+    Future<Either<ExportData, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = WorkspaceEvent.ExportDocument.toString()
           ..payload = requestToBytes(this.request);
@@ -407,7 +407,7 @@ class WorkspaceEventExportDocument {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(ExportData.fromBuffer(okBytes)),
-           (errBytes) => right(WorkspaceError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -432,13 +432,13 @@ class NetworkEventUpdateNetworkType {
 class UserEventInitUser {
     UserEventInitUser();
 
-    Future<Either<Unit, UserError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
      final request = FFIRequest.create()
         ..event = UserEvent.InitUser.toString();
 
      return Dispatch.asyncRequest(request).then((bytesResult) => bytesResult.fold(
         (bytes) => left(unit),
-        (errBytes) => right(UserError.fromBuffer(errBytes)),
+        (errBytes) => right(FlowyError.fromBuffer(errBytes)),
       ));
     }
 }
@@ -447,7 +447,7 @@ class UserEventSignIn {
      SignInRequest request;
      UserEventSignIn(this.request);
 
-    Future<Either<UserProfile, UserError>> send() {
+    Future<Either<UserProfile, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = UserEvent.SignIn.toString()
           ..payload = requestToBytes(this.request);
@@ -455,7 +455,7 @@ class UserEventSignIn {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(UserProfile.fromBuffer(okBytes)),
-           (errBytes) => right(UserError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -464,7 +464,7 @@ class UserEventSignUp {
      SignUpRequest request;
      UserEventSignUp(this.request);
 
-    Future<Either<UserProfile, UserError>> send() {
+    Future<Either<UserProfile, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = UserEvent.SignUp.toString()
           ..payload = requestToBytes(this.request);
@@ -472,7 +472,7 @@ class UserEventSignUp {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (okBytes) => left(UserProfile.fromBuffer(okBytes)),
-           (errBytes) => right(UserError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -480,13 +480,13 @@ class UserEventSignUp {
 class UserEventSignOut {
     UserEventSignOut();
 
-    Future<Either<Unit, UserError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
      final request = FFIRequest.create()
         ..event = UserEvent.SignOut.toString();
 
      return Dispatch.asyncRequest(request).then((bytesResult) => bytesResult.fold(
         (bytes) => left(unit),
-        (errBytes) => right(UserError.fromBuffer(errBytes)),
+        (errBytes) => right(FlowyError.fromBuffer(errBytes)),
       ));
     }
 }
@@ -495,7 +495,7 @@ class UserEventUpdateUser {
      UpdateUserRequest request;
      UserEventUpdateUser(this.request);
 
-    Future<Either<Unit, UserError>> send() {
+    Future<Either<Unit, FlowyError>> send() {
     final request = FFIRequest.create()
           ..event = UserEvent.UpdateUser.toString()
           ..payload = requestToBytes(this.request);
@@ -503,7 +503,7 @@ class UserEventUpdateUser {
     return Dispatch.asyncRequest(request)
         .then((bytesResult) => bytesResult.fold(
            (bytes) => left(unit),
-           (errBytes) => right(UserError.fromBuffer(errBytes)),
+           (errBytes) => right(FlowyError.fromBuffer(errBytes)),
         ));
     }
 }
@@ -511,13 +511,13 @@ class UserEventUpdateUser {
 class UserEventGetUserProfile {
     UserEventGetUserProfile();
 
-    Future<Either<UserProfile, UserError>> send() {
+    Future<Either<UserProfile, FlowyError>> send() {
      final request = FFIRequest.create()
         ..event = UserEvent.GetUserProfile.toString();
 
      return Dispatch.asyncRequest(request).then((bytesResult) => bytesResult.fold(
         (okBytes) => left(UserProfile.fromBuffer(okBytes)),
-        (errBytes) => right(UserError.fromBuffer(errBytes)),
+        (errBytes) => right(FlowyError.fromBuffer(errBytes)),
       ));
     }
 }
@@ -525,13 +525,13 @@ class UserEventGetUserProfile {
 class UserEventCheckUser {
     UserEventCheckUser();
 
-    Future<Either<UserProfile, UserError>> send() {
+    Future<Either<UserProfile, FlowyError>> send() {
      final request = FFIRequest.create()
         ..event = UserEvent.CheckUser.toString();
 
      return Dispatch.asyncRequest(request).then((bytesResult) => bytesResult.fold(
         (okBytes) => left(UserProfile.fromBuffer(okBytes)),
-        (errBytes) => right(UserError.fromBuffer(errBytes)),
+        (errBytes) => right(FlowyError.fromBuffer(errBytes)),
       ));
     }
 }
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/dispatch/dispatch.dart b/frontend/app_flowy/packages/flowy_sdk/lib/dispatch/dispatch.dart
index 157693177c..9768873400 100644
--- a/frontend/app_flowy/packages/flowy_sdk/lib/dispatch/dispatch.dart
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/dispatch/dispatch.dart
@@ -6,9 +6,7 @@ import 'package:flowy_sdk/protobuf/dart-ffi/ffi_response.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-error/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-net/event.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-net/network_state.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-user/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-user/event.pb.dart';
-import 'package:flowy_sdk/protobuf/flowy-core/errors.pb.dart';
 import 'package:flowy_sdk/protobuf/flowy-core/event.pb.dart';
 import 'package:isolates/isolates.dart';
 import 'package:isolates/ports.dart';
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pbenum.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pb.dart
similarity index 74%
rename from frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pbenum.dart
rename to frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pb.dart
index 2bb3f5b53b..6817422f70 100644
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pbenum.dart
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pb.dart
@@ -1,7 +1,11 @@
 ///
 //  Generated code. Do not modify.
-//  source: errors.proto
+//  source: error_code.proto
 //
 // @dart = 2.12
 // ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields
 
+import 'dart:core' as $core;
+
+export 'error_code.pbenum.dart';
+
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pbenum.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pbenum.dart
new file mode 100644
index 0000000000..5cc919914a
--- /dev/null
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pbenum.dart
@@ -0,0 +1,82 @@
+///
+//  Generated code. Do not modify.
+//  source: error_code.proto
+//
+// @dart = 2.12
+// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields
+
+// ignore_for_file: UNDEFINED_SHOWN_NAME
+import 'dart:core' as $core;
+import 'package:protobuf/protobuf.dart' as $pb;
+
+class ErrorCode extends $pb.ProtobufEnum {
+  static const ErrorCode Internal = ErrorCode._(0, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'Internal');
+  static const ErrorCode UserUnauthorized = ErrorCode._(2, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UserUnauthorized');
+  static const ErrorCode RecordNotFound = ErrorCode._(3, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'RecordNotFound');
+  static const ErrorCode WorkspaceNameInvalid = ErrorCode._(100, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'WorkspaceNameInvalid');
+  static const ErrorCode WorkspaceIdInvalid = ErrorCode._(101, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'WorkspaceIdInvalid');
+  static const ErrorCode AppColorStyleInvalid = ErrorCode._(102, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'AppColorStyleInvalid');
+  static const ErrorCode WorkspaceDescTooLong = ErrorCode._(103, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'WorkspaceDescTooLong');
+  static const ErrorCode WorkspaceNameTooLong = ErrorCode._(104, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'WorkspaceNameTooLong');
+  static const ErrorCode AppIdInvalid = ErrorCode._(110, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'AppIdInvalid');
+  static const ErrorCode AppNameInvalid = ErrorCode._(111, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'AppNameInvalid');
+  static const ErrorCode ViewNameInvalid = ErrorCode._(120, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'ViewNameInvalid');
+  static const ErrorCode ViewThumbnailInvalid = ErrorCode._(121, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'ViewThumbnailInvalid');
+  static const ErrorCode ViewIdInvalid = ErrorCode._(122, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'ViewIdInvalid');
+  static const ErrorCode ViewDescTooLong = ErrorCode._(123, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'ViewDescTooLong');
+  static const ErrorCode ViewDataInvalid = ErrorCode._(124, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'ViewDataInvalid');
+  static const ErrorCode ViewNameTooLong = ErrorCode._(125, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'ViewNameTooLong');
+  static const ErrorCode ConnectError = ErrorCode._(200, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'ConnectError');
+  static const ErrorCode EmailIsEmpty = ErrorCode._(300, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'EmailIsEmpty');
+  static const ErrorCode EmailFormatInvalid = ErrorCode._(301, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'EmailFormatInvalid');
+  static const ErrorCode EmailAlreadyExists = ErrorCode._(302, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'EmailAlreadyExists');
+  static const ErrorCode PasswordIsEmpty = ErrorCode._(303, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'PasswordIsEmpty');
+  static const ErrorCode PasswordTooLong = ErrorCode._(304, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'PasswordTooLong');
+  static const ErrorCode PasswordContainsForbidCharacters = ErrorCode._(305, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'PasswordContainsForbidCharacters');
+  static const ErrorCode PasswordFormatInvalid = ErrorCode._(306, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'PasswordFormatInvalid');
+  static const ErrorCode PasswordNotMatch = ErrorCode._(307, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'PasswordNotMatch');
+  static const ErrorCode UserNameTooLong = ErrorCode._(308, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UserNameTooLong');
+  static const ErrorCode UserNameContainForbiddenCharacters = ErrorCode._(309, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UserNameContainForbiddenCharacters');
+  static const ErrorCode UserNameIsEmpty = ErrorCode._(310, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UserNameIsEmpty');
+  static const ErrorCode UserIdInvalid = ErrorCode._(311, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UserIdInvalid');
+  static const ErrorCode UserNotExist = ErrorCode._(312, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UserNotExist');
+
+  static const $core.List<ErrorCode> values = <ErrorCode> [
+    Internal,
+    UserUnauthorized,
+    RecordNotFound,
+    WorkspaceNameInvalid,
+    WorkspaceIdInvalid,
+    AppColorStyleInvalid,
+    WorkspaceDescTooLong,
+    WorkspaceNameTooLong,
+    AppIdInvalid,
+    AppNameInvalid,
+    ViewNameInvalid,
+    ViewThumbnailInvalid,
+    ViewIdInvalid,
+    ViewDescTooLong,
+    ViewDataInvalid,
+    ViewNameTooLong,
+    ConnectError,
+    EmailIsEmpty,
+    EmailFormatInvalid,
+    EmailAlreadyExists,
+    PasswordIsEmpty,
+    PasswordTooLong,
+    PasswordContainsForbidCharacters,
+    PasswordFormatInvalid,
+    PasswordNotMatch,
+    UserNameTooLong,
+    UserNameContainForbiddenCharacters,
+    UserNameIsEmpty,
+    UserIdInvalid,
+    UserNotExist,
+  ];
+
+  static final $core.Map<$core.int, ErrorCode> _byValue = $pb.ProtobufEnum.initByValue(values);
+  static ErrorCode? valueOf($core.int value) => _byValue[value];
+
+  const ErrorCode._($core.int v, $core.String n) : super(v, n);
+}
+
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pbjson.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pbjson.dart
new file mode 100644
index 0000000000..5d30b04f64
--- /dev/null
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pbjson.dart
@@ -0,0 +1,49 @@
+///
+//  Generated code. Do not modify.
+//  source: error_code.proto
+//
+// @dart = 2.12
+// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields,deprecated_member_use_from_same_package
+
+import 'dart:core' as $core;
+import 'dart:convert' as $convert;
+import 'dart:typed_data' as $typed_data;
+@$core.Deprecated('Use errorCodeDescriptor instead')
+const ErrorCode$json = const {
+  '1': 'ErrorCode',
+  '2': const [
+    const {'1': 'Internal', '2': 0},
+    const {'1': 'UserUnauthorized', '2': 2},
+    const {'1': 'RecordNotFound', '2': 3},
+    const {'1': 'WorkspaceNameInvalid', '2': 100},
+    const {'1': 'WorkspaceIdInvalid', '2': 101},
+    const {'1': 'AppColorStyleInvalid', '2': 102},
+    const {'1': 'WorkspaceDescTooLong', '2': 103},
+    const {'1': 'WorkspaceNameTooLong', '2': 104},
+    const {'1': 'AppIdInvalid', '2': 110},
+    const {'1': 'AppNameInvalid', '2': 111},
+    const {'1': 'ViewNameInvalid', '2': 120},
+    const {'1': 'ViewThumbnailInvalid', '2': 121},
+    const {'1': 'ViewIdInvalid', '2': 122},
+    const {'1': 'ViewDescTooLong', '2': 123},
+    const {'1': 'ViewDataInvalid', '2': 124},
+    const {'1': 'ViewNameTooLong', '2': 125},
+    const {'1': 'ConnectError', '2': 200},
+    const {'1': 'EmailIsEmpty', '2': 300},
+    const {'1': 'EmailFormatInvalid', '2': 301},
+    const {'1': 'EmailAlreadyExists', '2': 302},
+    const {'1': 'PasswordIsEmpty', '2': 303},
+    const {'1': 'PasswordTooLong', '2': 304},
+    const {'1': 'PasswordContainsForbidCharacters', '2': 305},
+    const {'1': 'PasswordFormatInvalid', '2': 306},
+    const {'1': 'PasswordNotMatch', '2': 307},
+    const {'1': 'UserNameTooLong', '2': 308},
+    const {'1': 'UserNameContainForbiddenCharacters', '2': 309},
+    const {'1': 'UserNameIsEmpty', '2': 310},
+    const {'1': 'UserIdInvalid', '2': 311},
+    const {'1': 'UserNotExist', '2': 312},
+  ],
+};
+
+/// Descriptor for `ErrorCode`. Decode as a `google.protobuf.EnumDescriptorProto`.
+final $typed_data.Uint8List errorCodeDescriptor = $convert.base64Decode('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');
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbserver.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pbserver.dart
similarity index 84%
rename from frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbserver.dart
rename to frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pbserver.dart
index 18b02b9216..a38de6d5a4 100644
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbserver.dart
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/error_code.pbserver.dart
@@ -1,9 +1,9 @@
 ///
 //  Generated code. Do not modify.
-//  source: errors.proto
+//  source: error_code.proto
 //
 // @dart = 2.12
 // ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields,deprecated_member_use_from_same_package
 
-export 'errors.pb.dart';
+export 'error_code.pb.dart';
 
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/protobuf.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/protobuf.dart
new file mode 100644
index 0000000000..379334caf0
--- /dev/null
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/error-code/protobuf.dart
@@ -0,0 +1,2 @@
+// Auto-generated, do not edit 
+export './error_code.pb.dart';
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pb.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pb.dart
deleted file mode 100644
index b03dd960be..0000000000
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pb.dart
+++ /dev/null
@@ -1,72 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: errors.proto
-//
-// @dart = 2.12
-// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields
-
-import 'dart:core' as $core;
-
-import 'package:protobuf/protobuf.dart' as $pb;
-
-class WorkspaceError extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo(const $core.bool.fromEnvironment('protobuf.omit_message_names') ? '' : 'WorkspaceError', createEmptyInstance: create)
-    ..a<$core.int>(1, const $core.bool.fromEnvironment('protobuf.omit_field_names') ? '' : 'code', $pb.PbFieldType.O3)
-    ..aOS(2, const $core.bool.fromEnvironment('protobuf.omit_field_names') ? '' : 'msg')
-    ..hasRequiredFields = false
-  ;
-
-  WorkspaceError._() : super();
-  factory WorkspaceError({
-    $core.int? code,
-    $core.String? msg,
-  }) {
-    final _result = create();
-    if (code != null) {
-      _result.code = code;
-    }
-    if (msg != null) {
-      _result.msg = msg;
-    }
-    return _result;
-  }
-  factory WorkspaceError.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory WorkspaceError.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
-  'Will be removed in next major version')
-  WorkspaceError clone() => WorkspaceError()..mergeFromMessage(this);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
-  'Will be removed in next major version')
-  WorkspaceError copyWith(void Function(WorkspaceError) updates) => super.copyWith((message) => updates(message as WorkspaceError)) as WorkspaceError; // ignore: deprecated_member_use
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static WorkspaceError create() => WorkspaceError._();
-  WorkspaceError createEmptyInstance() => create();
-  static $pb.PbList<WorkspaceError> createRepeated() => $pb.PbList<WorkspaceError>();
-  @$core.pragma('dart2js:noInline')
-  static WorkspaceError getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<WorkspaceError>(create);
-  static WorkspaceError? _defaultInstance;
-
-  @$pb.TagNumber(1)
-  $core.int get code => $_getIZ(0);
-  @$pb.TagNumber(1)
-  set code($core.int v) { $_setSignedInt32(0, v); }
-  @$pb.TagNumber(1)
-  $core.bool hasCode() => $_has(0);
-  @$pb.TagNumber(1)
-  void clearCode() => clearField(1);
-
-  @$pb.TagNumber(2)
-  $core.String get msg => $_getSZ(1);
-  @$pb.TagNumber(2)
-  set msg($core.String v) { $_setString(1, v); }
-  @$pb.TagNumber(2)
-  $core.bool hasMsg() => $_has(1);
-  @$pb.TagNumber(2)
-  void clearMsg() => clearField(2);
-}
-
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pbjson.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pbjson.dart
deleted file mode 100644
index dd6a45e8d9..0000000000
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pbjson.dart
+++ /dev/null
@@ -1,21 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: errors.proto
-//
-// @dart = 2.12
-// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields,deprecated_member_use_from_same_package
-
-import 'dart:core' as $core;
-import 'dart:convert' as $convert;
-import 'dart:typed_data' as $typed_data;
-@$core.Deprecated('Use workspaceErrorDescriptor instead')
-const WorkspaceError$json = const {
-  '1': 'WorkspaceError',
-  '2': const [
-    const {'1': 'code', '3': 1, '4': 1, '5': 5, '10': 'code'},
-    const {'1': 'msg', '3': 2, '4': 1, '5': 9, '10': 'msg'},
-  ],
-};
-
-/// Descriptor for `WorkspaceError`. Decode as a `google.protobuf.DescriptorProto`.
-final $typed_data.Uint8List workspaceErrorDescriptor = $convert.base64Decode('Cg5Xb3Jrc3BhY2VFcnJvchISCgRjb2RlGAEgASgFUgRjb2RlEhAKA21zZxgCIAEoCVIDbXNn');
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pbserver.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pbserver.dart
deleted file mode 100644
index 18b02b9216..0000000000
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/errors.pbserver.dart
+++ /dev/null
@@ -1,9 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: errors.proto
-//
-// @dart = 2.12
-// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields,deprecated_member_use_from_same_package
-
-export 'errors.pb.dart';
-
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/protobuf.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/protobuf.dart
index bb4f1f6e45..0cd5547d0a 100644
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/protobuf.dart
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-core/protobuf.dart
@@ -1,4 +1,3 @@
 // Auto-generated, do not edit 
 export './observable.pb.dart';
-export './errors.pb.dart';
 export './event.pb.dart';
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pb.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pb.dart
deleted file mode 100644
index fbb5affe8e..0000000000
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pb.dart
+++ /dev/null
@@ -1,76 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: errors.proto
-//
-// @dart = 2.12
-// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields
-
-import 'dart:core' as $core;
-
-import 'package:protobuf/protobuf.dart' as $pb;
-
-import 'errors.pbenum.dart';
-
-export 'errors.pbenum.dart';
-
-class DocError extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo(const $core.bool.fromEnvironment('protobuf.omit_message_names') ? '' : 'DocError', createEmptyInstance: create)
-    ..e<ErrorCode>(1, const $core.bool.fromEnvironment('protobuf.omit_field_names') ? '' : 'code', $pb.PbFieldType.OE, defaultOrMaker: ErrorCode.WsConnectError, valueOf: ErrorCode.valueOf, enumValues: ErrorCode.values)
-    ..aOS(2, const $core.bool.fromEnvironment('protobuf.omit_field_names') ? '' : 'msg')
-    ..hasRequiredFields = false
-  ;
-
-  DocError._() : super();
-  factory DocError({
-    ErrorCode? code,
-    $core.String? msg,
-  }) {
-    final _result = create();
-    if (code != null) {
-      _result.code = code;
-    }
-    if (msg != null) {
-      _result.msg = msg;
-    }
-    return _result;
-  }
-  factory DocError.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory DocError.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
-  'Will be removed in next major version')
-  DocError clone() => DocError()..mergeFromMessage(this);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
-  'Will be removed in next major version')
-  DocError copyWith(void Function(DocError) updates) => super.copyWith((message) => updates(message as DocError)) as DocError; // ignore: deprecated_member_use
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static DocError create() => DocError._();
-  DocError createEmptyInstance() => create();
-  static $pb.PbList<DocError> createRepeated() => $pb.PbList<DocError>();
-  @$core.pragma('dart2js:noInline')
-  static DocError getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<DocError>(create);
-  static DocError? _defaultInstance;
-
-  @$pb.TagNumber(1)
-  ErrorCode get code => $_getN(0);
-  @$pb.TagNumber(1)
-  set code(ErrorCode v) { setField(1, v); }
-  @$pb.TagNumber(1)
-  $core.bool hasCode() => $_has(0);
-  @$pb.TagNumber(1)
-  void clearCode() => clearField(1);
-
-  @$pb.TagNumber(2)
-  $core.String get msg => $_getSZ(1);
-  @$pb.TagNumber(2)
-  set msg($core.String v) { $_setString(1, v); }
-  @$pb.TagNumber(2)
-  $core.bool hasMsg() => $_has(1);
-  @$pb.TagNumber(2)
-  void clearMsg() => clearField(2);
-}
-
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbenum.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbenum.dart
deleted file mode 100644
index 5933af7967..0000000000
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbenum.dart
+++ /dev/null
@@ -1,32 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: errors.proto
-//
-// @dart = 2.12
-// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields
-
-// ignore_for_file: UNDEFINED_SHOWN_NAME
-import 'dart:core' as $core;
-import 'package:protobuf/protobuf.dart' as $pb;
-
-class ErrorCode extends $pb.ProtobufEnum {
-  static const ErrorCode WsConnectError = ErrorCode._(0, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'WsConnectError');
-  static const ErrorCode DocNotfound = ErrorCode._(1, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'DocNotfound');
-  static const ErrorCode DuplicateRevision = ErrorCode._(2, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'DuplicateRevision');
-  static const ErrorCode UserUnauthorized = ErrorCode._(10, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'UserUnauthorized');
-  static const ErrorCode InternalError = ErrorCode._(1000, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'InternalError');
-
-  static const $core.List<ErrorCode> values = <ErrorCode> [
-    WsConnectError,
-    DocNotfound,
-    DuplicateRevision,
-    UserUnauthorized,
-    InternalError,
-  ];
-
-  static final $core.Map<$core.int, ErrorCode> _byValue = $pb.ProtobufEnum.initByValue(values);
-  static ErrorCode? valueOf($core.int value) => _byValue[value];
-
-  const ErrorCode._($core.int v, $core.String n) : super(v, n);
-}
-
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbjson.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbjson.dart
deleted file mode 100644
index a707e66df7..0000000000
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/errors.pbjson.dart
+++ /dev/null
@@ -1,35 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: errors.proto
-//
-// @dart = 2.12
-// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields,deprecated_member_use_from_same_package
-
-import 'dart:core' as $core;
-import 'dart:convert' as $convert;
-import 'dart:typed_data' as $typed_data;
-@$core.Deprecated('Use errorCodeDescriptor instead')
-const ErrorCode$json = const {
-  '1': 'ErrorCode',
-  '2': const [
-    const {'1': 'WsConnectError', '2': 0},
-    const {'1': 'DocNotfound', '2': 1},
-    const {'1': 'DuplicateRevision', '2': 2},
-    const {'1': 'UserUnauthorized', '2': 10},
-    const {'1': 'InternalError', '2': 1000},
-  ],
-};
-
-/// Descriptor for `ErrorCode`. Decode as a `google.protobuf.EnumDescriptorProto`.
-final $typed_data.Uint8List errorCodeDescriptor = $convert.base64Decode('CglFcnJvckNvZGUSEgoOV3NDb25uZWN0RXJyb3IQABIPCgtEb2NOb3Rmb3VuZBABEhUKEUR1cGxpY2F0ZVJldmlzaW9uEAISFAoQVXNlclVuYXV0aG9yaXplZBAKEhIKDUludGVybmFsRXJyb3IQ6Ac=');
-@$core.Deprecated('Use docErrorDescriptor instead')
-const DocError$json = const {
-  '1': 'DocError',
-  '2': const [
-    const {'1': 'code', '3': 1, '4': 1, '5': 14, '6': '.ErrorCode', '10': 'code'},
-    const {'1': 'msg', '3': 2, '4': 1, '5': 9, '10': 'msg'},
-  ],
-};
-
-/// Descriptor for `DocError`. Decode as a `google.protobuf.DescriptorProto`.
-final $typed_data.Uint8List docErrorDescriptor = $convert.base64Decode('CghEb2NFcnJvchIeCgRjb2RlGAEgASgOMgouRXJyb3JDb2RlUgRjb2RlEhAKA21zZxgCIAEoCVIDbXNn');
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/protobuf.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/protobuf.dart
index 463cec0dc3..7353db8c64 100644
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/protobuf.dart
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-document/protobuf.dart
@@ -1,3 +1,2 @@
 // Auto-generated, do not edit 
 export './observable.pb.dart';
-export './errors.pb.dart';
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pb.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pb.dart
index 7d0a6cb8f4..95122bdd41 100644
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pb.dart
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pb.dart
@@ -9,8 +9,6 @@ import 'dart:core' as $core;
 
 import 'package:protobuf/protobuf.dart' as $pb;
 
-export 'errors.pbenum.dart';
-
 class FlowyError extends $pb.GeneratedMessage {
   static final $pb.BuilderInfo _i = $pb.BuilderInfo(const $core.bool.fromEnvironment('protobuf.omit_message_names') ? '' : 'FlowyError', createEmptyInstance: create)
     ..a<$core.int>(1, const $core.bool.fromEnvironment('protobuf.omit_field_names') ? '' : 'code', $pb.PbFieldType.O3)
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pbenum.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pbenum.dart
index 8d31a7370b..2bb3f5b53b 100644
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pbenum.dart
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pbenum.dart
@@ -5,20 +5,3 @@
 // @dart = 2.12
 // ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields
 
-// ignore_for_file: UNDEFINED_SHOWN_NAME
-import 'dart:core' as $core;
-import 'package:protobuf/protobuf.dart' as $pb;
-
-class ErrorCode extends $pb.ProtobufEnum {
-  static const ErrorCode Internal = ErrorCode._(0, const $core.bool.fromEnvironment('protobuf.omit_enum_names') ? '' : 'Internal');
-
-  static const $core.List<ErrorCode> values = <ErrorCode> [
-    Internal,
-  ];
-
-  static final $core.Map<$core.int, ErrorCode> _byValue = $pb.ProtobufEnum.initByValue(values);
-  static ErrorCode? valueOf($core.int value) => _byValue[value];
-
-  const ErrorCode._($core.int v, $core.String n) : super(v, n);
-}
-
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pbjson.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pbjson.dart
index b9209928ce..18f397fbe8 100644
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pbjson.dart
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-error/errors.pbjson.dart
@@ -8,16 +8,6 @@
 import 'dart:core' as $core;
 import 'dart:convert' as $convert;
 import 'dart:typed_data' as $typed_data;
-@$core.Deprecated('Use errorCodeDescriptor instead')
-const ErrorCode$json = const {
-  '1': 'ErrorCode',
-  '2': const [
-    const {'1': 'Internal', '2': 0},
-  ],
-};
-
-/// Descriptor for `ErrorCode`. Decode as a `google.protobuf.EnumDescriptorProto`.
-final $typed_data.Uint8List errorCodeDescriptor = $convert.base64Decode('CglFcnJvckNvZGUSDAoISW50ZXJuYWwQAA==');
 @$core.Deprecated('Use flowyErrorDescriptor instead')
 const FlowyError$json = const {
   '1': 'FlowyError',
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pb.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pb.dart
deleted file mode 100644
index a6bf94f671..0000000000
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pb.dart
+++ /dev/null
@@ -1,72 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: errors.proto
-//
-// @dart = 2.12
-// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields
-
-import 'dart:core' as $core;
-
-import 'package:protobuf/protobuf.dart' as $pb;
-
-class UserError extends $pb.GeneratedMessage {
-  static final $pb.BuilderInfo _i = $pb.BuilderInfo(const $core.bool.fromEnvironment('protobuf.omit_message_names') ? '' : 'UserError', createEmptyInstance: create)
-    ..a<$core.int>(1, const $core.bool.fromEnvironment('protobuf.omit_field_names') ? '' : 'code', $pb.PbFieldType.O3)
-    ..aOS(2, const $core.bool.fromEnvironment('protobuf.omit_field_names') ? '' : 'msg')
-    ..hasRequiredFields = false
-  ;
-
-  UserError._() : super();
-  factory UserError({
-    $core.int? code,
-    $core.String? msg,
-  }) {
-    final _result = create();
-    if (code != null) {
-      _result.code = code;
-    }
-    if (msg != null) {
-      _result.msg = msg;
-    }
-    return _result;
-  }
-  factory UserError.fromBuffer($core.List<$core.int> i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromBuffer(i, r);
-  factory UserError.fromJson($core.String i, [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) => create()..mergeFromJson(i, r);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
-  'Will be removed in next major version')
-  UserError clone() => UserError()..mergeFromMessage(this);
-  @$core.Deprecated(
-  'Using this can add significant overhead to your binary. '
-  'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
-  'Will be removed in next major version')
-  UserError copyWith(void Function(UserError) updates) => super.copyWith((message) => updates(message as UserError)) as UserError; // ignore: deprecated_member_use
-  $pb.BuilderInfo get info_ => _i;
-  @$core.pragma('dart2js:noInline')
-  static UserError create() => UserError._();
-  UserError createEmptyInstance() => create();
-  static $pb.PbList<UserError> createRepeated() => $pb.PbList<UserError>();
-  @$core.pragma('dart2js:noInline')
-  static UserError getDefault() => _defaultInstance ??= $pb.GeneratedMessage.$_defaultFor<UserError>(create);
-  static UserError? _defaultInstance;
-
-  @$pb.TagNumber(1)
-  $core.int get code => $_getIZ(0);
-  @$pb.TagNumber(1)
-  set code($core.int v) { $_setSignedInt32(0, v); }
-  @$pb.TagNumber(1)
-  $core.bool hasCode() => $_has(0);
-  @$pb.TagNumber(1)
-  void clearCode() => clearField(1);
-
-  @$pb.TagNumber(2)
-  $core.String get msg => $_getSZ(1);
-  @$pb.TagNumber(2)
-  set msg($core.String v) { $_setString(1, v); }
-  @$pb.TagNumber(2)
-  $core.bool hasMsg() => $_has(1);
-  @$pb.TagNumber(2)
-  void clearMsg() => clearField(2);
-}
-
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pbenum.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pbenum.dart
deleted file mode 100644
index 2bb3f5b53b..0000000000
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pbenum.dart
+++ /dev/null
@@ -1,7 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: errors.proto
-//
-// @dart = 2.12
-// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields
-
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pbjson.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pbjson.dart
deleted file mode 100644
index c9eaa6f189..0000000000
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pbjson.dart
+++ /dev/null
@@ -1,21 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: errors.proto
-//
-// @dart = 2.12
-// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields,deprecated_member_use_from_same_package
-
-import 'dart:core' as $core;
-import 'dart:convert' as $convert;
-import 'dart:typed_data' as $typed_data;
-@$core.Deprecated('Use userErrorDescriptor instead')
-const UserError$json = const {
-  '1': 'UserError',
-  '2': const [
-    const {'1': 'code', '3': 1, '4': 1, '5': 5, '10': 'code'},
-    const {'1': 'msg', '3': 2, '4': 1, '5': 9, '10': 'msg'},
-  ],
-};
-
-/// Descriptor for `UserError`. Decode as a `google.protobuf.DescriptorProto`.
-final $typed_data.Uint8List userErrorDescriptor = $convert.base64Decode('CglVc2VyRXJyb3ISEgoEY29kZRgBIAEoBVIEY29kZRIQCgNtc2cYAiABKAlSA21zZw==');
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pbserver.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pbserver.dart
deleted file mode 100644
index 18b02b9216..0000000000
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/errors.pbserver.dart
+++ /dev/null
@@ -1,9 +0,0 @@
-///
-//  Generated code. Do not modify.
-//  source: errors.proto
-//
-// @dart = 2.12
-// ignore_for_file: annotate_overrides,camel_case_types,unnecessary_const,non_constant_identifier_names,library_prefixes,unused_import,unused_shown_name,return_of_invalid_type,unnecessary_this,prefer_final_fields,deprecated_member_use_from_same_package
-
-export 'errors.pb.dart';
-
diff --git a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/protobuf.dart b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/protobuf.dart
index bb4f1f6e45..0cd5547d0a 100644
--- a/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/protobuf.dart
+++ b/frontend/app_flowy/packages/flowy_sdk/lib/protobuf/flowy-user/protobuf.dart
@@ -1,4 +1,3 @@
 // Auto-generated, do not edit 
 export './observable.pb.dart';
-export './errors.pb.dart';
 export './event.pb.dart';
diff --git a/frontend/rust-lib/flowy-core/Cargo.toml b/frontend/rust-lib/flowy-core/Cargo.toml
index 6a464bd687..44e1523c6d 100644
--- a/frontend/rust-lib/flowy-core/Cargo.toml
+++ b/frontend/rust-lib/flowy-core/Cargo.toml
@@ -16,6 +16,7 @@ lib-infra = { path = "../../../shared-lib/lib-infra" }
 
 flowy-document = { path = "../flowy-document" }
 flowy-database = { path = "../flowy-database" }
+flowy-error = { path = "../flowy-error", features = ["db", "backend"]}
 flowy-net = { path = "../flowy-net" }
 dart-notify = { path = "../dart-notify" }
 lib-dispatch = { path = "../lib-dispatch" }
diff --git a/frontend/rust-lib/flowy-core/src/core/aggregate_tasks/workspace_task.rs b/frontend/rust-lib/flowy-core/src/core/aggregate_tasks/workspace_task.rs
index 39cffec56e..747a4e81c9 100644
--- a/frontend/rust-lib/flowy-core/src/core/aggregate_tasks/workspace_task.rs
+++ b/frontend/rust-lib/flowy-core/src/core/aggregate_tasks/workspace_task.rs
@@ -1,6 +1,6 @@
 use crate::{
     core::CoreContext,
-    errors::WorkspaceError,
+    errors::FlowyError,
     notify::{send_dart_notification, WorkspaceNotification},
     services::workspace::sql::{WorkspaceTable, WorkspaceTableSql},
 };
@@ -13,7 +13,7 @@ pub fn read_workspaces_on_server(
     core: Unit<Arc<CoreContext>>,
     user_id: String,
     params: WorkspaceIdentifier,
-) -> Result<(), WorkspaceError> {
+) -> Result<(), FlowyError> {
     let (token, server) = (core.user.token()?, core.server.clone());
     let app_ctrl = core.app_controller.clone();
     let view_ctrl = core.view_controller.clone();
@@ -22,7 +22,7 @@ pub fn read_workspaces_on_server(
     tokio::spawn(async move {
         // Opti: handle the error and retry?
         let workspaces = server.read_workspace(&token, params).await?;
-        let _ = (&*conn).immediate_transaction::<_, WorkspaceError, _>(|| {
+        let _ = (&*conn).immediate_transaction::<_, FlowyError, _>(|| {
             tracing::debug!("Save {} workspace", workspaces.len());
             for workspace in &workspaces.items {
                 let m_workspace = workspace.clone();
@@ -53,7 +53,7 @@ pub fn read_workspaces_on_server(
         send_dart_notification(&token, WorkspaceNotification::WorkspaceListUpdated)
             .payload(workspaces)
             .send();
-        Result::<(), WorkspaceError>::Ok(())
+        Result::<(), FlowyError>::Ok(())
     });
 
     Ok(())
diff --git a/frontend/rust-lib/flowy-core/src/core/core_context.rs b/frontend/rust-lib/flowy-core/src/core/core_context.rs
index 0f94565e39..2b9a4431ca 100644
--- a/frontend/rust-lib/flowy-core/src/core/core_context.rs
+++ b/frontend/rust-lib/flowy-core/src/core/core_context.rs
@@ -10,7 +10,7 @@ use flowy_net::entities::NetworkType;
 
 use crate::{
     entities::workspace::RepeatedWorkspace,
-    errors::{WorkspaceError, WorkspaceResult},
+    errors::{FlowyError, FlowyResult},
     module::{WorkspaceDatabase, WorkspaceUser},
     notify::{send_dart_notification, WorkspaceNotification},
     services::{server::Server, AppController, TrashController, ViewController, WorkspaceController},
@@ -64,7 +64,7 @@ impl CoreContext {
         }
     }
 
-    pub async fn user_did_sign_in(&self, token: &str) -> WorkspaceResult<()> {
+    pub async fn user_did_sign_in(&self, token: &str) -> FlowyResult<()> {
         log::debug!("workspace initialize after sign in");
         let _ = self.init(token).await?;
         Ok(())
@@ -78,7 +78,7 @@ impl CoreContext {
         // TODO: (nathan) do something here
     }
 
-    pub async fn user_did_sign_up(&self, _token: &str) -> WorkspaceResult<()> {
+    pub async fn user_did_sign_up(&self, _token: &str) -> FlowyResult<()> {
         log::debug!("Create user default workspace");
         let time = Utc::now();
         let mut workspace = user_default::create_default_workspace(time);
@@ -120,7 +120,7 @@ impl CoreContext {
         Ok(())
     }
 
-    async fn init(&self, token: &str) -> Result<(), WorkspaceError> {
+    async fn init(&self, token: &str) -> Result<(), FlowyError> {
         if let Some(is_init) = INIT_WORKSPACE.read().get(token) {
             if *is_init {
                 return Ok(());
diff --git a/frontend/rust-lib/flowy-core/src/core/event_handler.rs b/frontend/rust-lib/flowy-core/src/core/event_handler.rs
index 9d9a7b7bb4..e7686c9620 100644
--- a/frontend/rust-lib/flowy-core/src/core/event_handler.rs
+++ b/frontend/rust-lib/flowy-core/src/core/event_handler.rs
@@ -1,6 +1,6 @@
 use crate::{
     core::{aggregate_tasks::read_workspaces_on_server, CoreContext},
-    errors::WorkspaceError,
+    errors::FlowyError,
     services::{get_current_workspace, read_local_workspace_apps},
 };
 use flowy_core_infra::entities::{
@@ -14,14 +14,14 @@ use std::{convert::TryInto, sync::Arc};
 pub(crate) async fn read_workspaces_handler(
     data: Data<QueryWorkspaceRequest>,
     core: Unit<Arc<CoreContext>>,
-) -> DataResult<RepeatedWorkspace, WorkspaceError> {
+) -> DataResult<RepeatedWorkspace, FlowyError> {
     let params: WorkspaceIdentifier = data.into_inner().try_into()?;
     let user_id = core.user.user_id()?;
     let conn = &*core.database.db_connection()?;
     let workspace_controller = core.workspace_controller.clone();
 
     let trash_controller = core.trash_controller.clone();
-    let workspaces = conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+    let workspaces = conn.immediate_transaction::<_, FlowyError, _>(|| {
         let mut workspaces = workspace_controller.read_local_workspaces(params.workspace_id.clone(), &user_id, conn)?;
         for workspace in workspaces.iter_mut() {
             let apps = read_local_workspace_apps(&workspace.id, trash_controller.clone(), conn)?.into_inner();
@@ -38,7 +38,7 @@ pub(crate) async fn read_workspaces_handler(
 #[tracing::instrument(skip(core), err)]
 pub async fn read_cur_workspace_handler(
     core: Unit<Arc<CoreContext>>,
-) -> DataResult<CurrentWorkspaceSetting, WorkspaceError> {
+) -> DataResult<CurrentWorkspaceSetting, FlowyError> {
     let workspace_id = get_current_workspace()?;
     let user_id = core.user.user_id()?;
     let params = WorkspaceIdentifier {
diff --git a/frontend/rust-lib/flowy-core/src/errors.rs b/frontend/rust-lib/flowy-core/src/errors.rs
deleted file mode 100644
index c0240ad2c5..0000000000
--- a/frontend/rust-lib/flowy-core/src/errors.rs
+++ /dev/null
@@ -1,106 +0,0 @@
-use bytes::Bytes;
-
-use backend_service::errors::ErrorCode as ServerErrorCode;
-pub use flowy_core_infra::errors::ErrorCode;
-use flowy_derive::ProtoBuf;
-use flowy_document::errors::DocError;
-use lib_dispatch::prelude::{EventResponse, ResponseBuilder};
-use std::{convert::TryInto, fmt, fmt::Debug};
-
-pub type WorkspaceResult<T> = std::result::Result<T, WorkspaceError>;
-
-#[derive(Debug, Default, Clone, ProtoBuf)]
-pub struct WorkspaceError {
-    #[pb(index = 1)]
-    pub code: i32,
-
-    #[pb(index = 2)]
-    pub msg: String,
-}
-
-macro_rules! static_workspace_error {
-    ($name:ident, $code:expr) => {
-        #[allow(non_snake_case, missing_docs)]
-        pub fn $name() -> WorkspaceError { $code.into() }
-    };
-}
-
-impl WorkspaceError {
-    pub fn new(code: ErrorCode, msg: &str) -> Self {
-        Self {
-            code: code.value(),
-            msg: msg.to_owned(),
-        }
-    }
-
-    static_workspace_error!(workspace_name, ErrorCode::WorkspaceNameInvalid);
-    static_workspace_error!(workspace_id, ErrorCode::WorkspaceIdInvalid);
-    static_workspace_error!(color_style, ErrorCode::AppColorStyleInvalid);
-    static_workspace_error!(workspace_desc, ErrorCode::WorkspaceDescTooLong);
-    static_workspace_error!(app_name, ErrorCode::AppNameInvalid);
-    static_workspace_error!(invalid_app_id, ErrorCode::AppIdInvalid);
-    static_workspace_error!(view_name, ErrorCode::ViewNameInvalid);
-    static_workspace_error!(view_thumbnail, ErrorCode::ViewThumbnailInvalid);
-    static_workspace_error!(invalid_view_id, ErrorCode::ViewIdInvalid);
-    static_workspace_error!(view_desc, ErrorCode::ViewDescTooLong);
-    static_workspace_error!(view_data, ErrorCode::ViewDataInvalid);
-    static_workspace_error!(unauthorized, ErrorCode::UserUnauthorized);
-    static_workspace_error!(internal, ErrorCode::InternalError);
-    static_workspace_error!(record_not_found, ErrorCode::RecordNotFound);
-    static_workspace_error!(ws, ErrorCode::WsConnectError);
-
-    pub fn context<T: Debug>(mut self, error: T) -> Self {
-        self.msg = format!("{:?}", error);
-        self
-    }
-}
-
-pub fn internal_error<T>(e: T) -> WorkspaceError
-where
-    T: std::fmt::Debug,
-{
-    WorkspaceError::internal().context(e)
-}
-
-impl std::convert::From<ErrorCode> for WorkspaceError {
-    fn from(code: ErrorCode) -> Self {
-        WorkspaceError {
-            code: code.value(),
-            msg: format!("{}", code),
-        }
-    }
-}
-
-impl std::convert::From<flowy_document::errors::DocError> for WorkspaceError {
-    fn from(error: DocError) -> Self { WorkspaceError::internal().context(error) }
-}
-
-impl std::convert::From<backend_service::errors::ServerError> for WorkspaceError {
-    fn from(error: backend_service::errors::ServerError) -> Self {
-        let code = server_error_to_workspace_error(error.code);
-        WorkspaceError::new(code, &error.msg)
-    }
-}
-
-impl std::convert::From<flowy_database::Error> for WorkspaceError {
-    fn from(error: flowy_database::Error) -> Self { WorkspaceError::internal().context(error) }
-}
-
-impl lib_dispatch::Error for WorkspaceError {
-    fn as_response(&self) -> EventResponse {
-        let bytes: Bytes = self.clone().try_into().unwrap();
-        ResponseBuilder::Err().data(bytes).build()
-    }
-}
-
-impl fmt::Display for WorkspaceError {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { write!(f, "{:?}: {}", &self.code, &self.msg) }
-}
-
-fn server_error_to_workspace_error(code: ServerErrorCode) -> ErrorCode {
-    match code {
-        ServerErrorCode::UserUnauthorized => ErrorCode::UserUnauthorized,
-        ServerErrorCode::RecordNotFound => ErrorCode::RecordNotFound,
-        _ => ErrorCode::InternalError,
-    }
-}
diff --git a/frontend/rust-lib/flowy-core/src/event.rs b/frontend/rust-lib/flowy-core/src/event.rs
index e89a638275..a6e23a5458 100644
--- a/frontend/rust-lib/flowy-core/src/event.rs
+++ b/frontend/rust-lib/flowy-core/src/event.rs
@@ -2,7 +2,7 @@ use flowy_derive::{Flowy_Event, ProtoBuf_Enum};
 use strum_macros::Display;
 
 #[derive(Clone, Copy, PartialEq, Eq, Debug, Display, Hash, ProtoBuf_Enum, Flowy_Event)]
-#[event_err = "WorkspaceError"]
+#[event_err = "FlowyError"]
 pub enum WorkspaceEvent {
     #[event(input = "CreateWorkspaceRequest", output = "Workspace")]
     CreateWorkspace   = 0,
diff --git a/frontend/rust-lib/flowy-core/src/lib.rs b/frontend/rust-lib/flowy-core/src/lib.rs
index 8de43ec141..5629b3b38e 100644
--- a/frontend/rust-lib/flowy-core/src/lib.rs
+++ b/frontend/rust-lib/flowy-core/src/lib.rs
@@ -11,7 +11,7 @@ mod macros;
 extern crate flowy_database;
 
 pub mod core;
-pub mod errors;
+
 mod notify;
 pub mod protobuf;
 mod util;
@@ -21,3 +21,7 @@ pub mod prelude {
 
     pub use crate::{core::*, errors::*, module::*};
 }
+
+pub mod errors {
+    pub use flowy_error::{internal_error, ErrorCode, FlowyError, FlowyResult};
+}
diff --git a/frontend/rust-lib/flowy-core/src/macros.rs b/frontend/rust-lib/flowy-core/src/macros.rs
index 44bae654bb..a02007d694 100644
--- a/frontend/rust-lib/flowy-core/src/macros.rs
+++ b/frontend/rust-lib/flowy-core/src/macros.rs
@@ -1,7 +1,7 @@
 // #[macro_export]
 // macro_rules! impl_save_func {
 //     ($func_name:ident, $target:ident, $table_name:expr, $conn:ident) => {
-//         fn $func_name(object: $target) -> Result<(), WorkspaceError> {
+//         fn $func_name(object: $target) -> Result<(), FlowyError> {
 //             let _ = diesel::insert_into($table_name)
 //                 .values($target)
 //                 .execute(&*($conn))?;
diff --git a/frontend/rust-lib/flowy-core/src/module.rs b/frontend/rust-lib/flowy-core/src/module.rs
index 6ea6b64f8d..bb98d8080a 100644
--- a/frontend/rust-lib/flowy-core/src/module.rs
+++ b/frontend/rust-lib/flowy-core/src/module.rs
@@ -8,7 +8,7 @@ use lib_sqlite::ConnectionPool;
 
 use crate::{
     core::{event_handler::*, CoreContext},
-    errors::WorkspaceError,
+    errors::FlowyError,
     event::WorkspaceEvent,
     services::{
         app::event_handler::*,
@@ -26,16 +26,16 @@ use crate::{
 pub trait WorkspaceDeps: WorkspaceUser + WorkspaceDatabase {}
 
 pub trait WorkspaceUser: Send + Sync {
-    fn user_id(&self) -> Result<String, WorkspaceError>;
-    fn token(&self) -> Result<String, WorkspaceError>;
+    fn user_id(&self) -> Result<String, FlowyError>;
+    fn token(&self) -> Result<String, FlowyError>;
 }
 
 pub trait WorkspaceDatabase: Send + Sync {
-    fn db_pool(&self) -> Result<Arc<ConnectionPool>, WorkspaceError>;
+    fn db_pool(&self) -> Result<Arc<ConnectionPool>, FlowyError>;
 
-    fn db_connection(&self) -> Result<DBConnection, WorkspaceError> {
+    fn db_connection(&self) -> Result<DBConnection, FlowyError> {
         let pool = self.db_pool()?;
-        let conn = pool.get().map_err(|e| WorkspaceError::internal().context(e))?;
+        let conn = pool.get().map_err(|e| FlowyError::internal().context(e))?;
         Ok(conn)
     }
 }
diff --git a/frontend/rust-lib/flowy-core/src/protobuf/model/errors.rs b/frontend/rust-lib/flowy-core/src/protobuf/model/errors.rs
deleted file mode 100644
index 4fd34284af..0000000000
--- a/frontend/rust-lib/flowy-core/src/protobuf/model/errors.rs
+++ /dev/null
@@ -1,243 +0,0 @@
-// This file is generated by rust-protobuf 2.22.1. Do not edit
-// @generated
-
-// https://github.com/rust-lang/rust-clippy/issues/702
-#![allow(unknown_lints)]
-#![allow(clippy::all)]
-
-#![allow(unused_attributes)]
-#![cfg_attr(rustfmt, rustfmt::skip)]
-
-#![allow(box_pointers)]
-#![allow(dead_code)]
-#![allow(missing_docs)]
-#![allow(non_camel_case_types)]
-#![allow(non_snake_case)]
-#![allow(non_upper_case_globals)]
-#![allow(trivial_casts)]
-#![allow(unused_imports)]
-#![allow(unused_results)]
-//! Generated file from `errors.proto`
-
-/// Generated files are compatible only with the same version
-/// of protobuf runtime.
-// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_22_1;
-
-#[derive(PartialEq,Clone,Default)]
-pub struct WorkspaceError {
-    // message fields
-    pub code: i32,
-    pub msg: ::std::string::String,
-    // special fields
-    pub unknown_fields: ::protobuf::UnknownFields,
-    pub cached_size: ::protobuf::CachedSize,
-}
-
-impl<'a> ::std::default::Default for &'a WorkspaceError {
-    fn default() -> &'a WorkspaceError {
-        <WorkspaceError as ::protobuf::Message>::default_instance()
-    }
-}
-
-impl WorkspaceError {
-    pub fn new() -> WorkspaceError {
-        ::std::default::Default::default()
-    }
-
-    // int32 code = 1;
-
-
-    pub fn get_code(&self) -> i32 {
-        self.code
-    }
-    pub fn clear_code(&mut self) {
-        self.code = 0;
-    }
-
-    // Param is passed by value, moved
-    pub fn set_code(&mut self, v: i32) {
-        self.code = v;
-    }
-
-    // string msg = 2;
-
-
-    pub fn get_msg(&self) -> &str {
-        &self.msg
-    }
-    pub fn clear_msg(&mut self) {
-        self.msg.clear();
-    }
-
-    // Param is passed by value, moved
-    pub fn set_msg(&mut self, v: ::std::string::String) {
-        self.msg = v;
-    }
-
-    // Mutable pointer to the field.
-    // If field is not initialized, it is initialized with default value first.
-    pub fn mut_msg(&mut self) -> &mut ::std::string::String {
-        &mut self.msg
-    }
-
-    // Take field
-    pub fn take_msg(&mut self) -> ::std::string::String {
-        ::std::mem::replace(&mut self.msg, ::std::string::String::new())
-    }
-}
-
-impl ::protobuf::Message for WorkspaceError {
-    fn is_initialized(&self) -> bool {
-        true
-    }
-
-    fn merge_from(&mut self, is: &mut ::protobuf::CodedInputStream<'_>) -> ::protobuf::ProtobufResult<()> {
-        while !is.eof()? {
-            let (field_number, wire_type) = is.read_tag_unpack()?;
-            match field_number {
-                1 => {
-                    if wire_type != ::protobuf::wire_format::WireTypeVarint {
-                        return ::std::result::Result::Err(::protobuf::rt::unexpected_wire_type(wire_type));
-                    }
-                    let tmp = is.read_int32()?;
-                    self.code = tmp;
-                },
-                2 => {
-                    ::protobuf::rt::read_singular_proto3_string_into(wire_type, is, &mut self.msg)?;
-                },
-                _ => {
-                    ::protobuf::rt::read_unknown_or_skip_group(field_number, wire_type, is, self.mut_unknown_fields())?;
-                },
-            };
-        }
-        ::std::result::Result::Ok(())
-    }
-
-    // Compute sizes of nested messages
-    #[allow(unused_variables)]
-    fn compute_size(&self) -> u32 {
-        let mut my_size = 0;
-        if self.code != 0 {
-            my_size += ::protobuf::rt::value_size(1, self.code, ::protobuf::wire_format::WireTypeVarint);
-        }
-        if !self.msg.is_empty() {
-            my_size += ::protobuf::rt::string_size(2, &self.msg);
-        }
-        my_size += ::protobuf::rt::unknown_fields_size(self.get_unknown_fields());
-        self.cached_size.set(my_size);
-        my_size
-    }
-
-    fn write_to_with_cached_sizes(&self, os: &mut ::protobuf::CodedOutputStream<'_>) -> ::protobuf::ProtobufResult<()> {
-        if self.code != 0 {
-            os.write_int32(1, self.code)?;
-        }
-        if !self.msg.is_empty() {
-            os.write_string(2, &self.msg)?;
-        }
-        os.write_unknown_fields(self.get_unknown_fields())?;
-        ::std::result::Result::Ok(())
-    }
-
-    fn get_cached_size(&self) -> u32 {
-        self.cached_size.get()
-    }
-
-    fn get_unknown_fields(&self) -> &::protobuf::UnknownFields {
-        &self.unknown_fields
-    }
-
-    fn mut_unknown_fields(&mut self) -> &mut ::protobuf::UnknownFields {
-        &mut self.unknown_fields
-    }
-
-    fn as_any(&self) -> &dyn (::std::any::Any) {
-        self as &dyn (::std::any::Any)
-    }
-    fn as_any_mut(&mut self) -> &mut dyn (::std::any::Any) {
-        self as &mut dyn (::std::any::Any)
-    }
-    fn into_any(self: ::std::boxed::Box<Self>) -> ::std::boxed::Box<dyn (::std::any::Any)> {
-        self
-    }
-
-    fn descriptor(&self) -> &'static ::protobuf::reflect::MessageDescriptor {
-        Self::descriptor_static()
-    }
-
-    fn new() -> WorkspaceError {
-        WorkspaceError::new()
-    }
-
-    fn descriptor_static() -> &'static ::protobuf::reflect::MessageDescriptor {
-        static descriptor: ::protobuf::rt::LazyV2<::protobuf::reflect::MessageDescriptor> = ::protobuf::rt::LazyV2::INIT;
-        descriptor.get(|| {
-            let mut fields = ::std::vec::Vec::new();
-            fields.push(::protobuf::reflect::accessor::make_simple_field_accessor::<_, ::protobuf::types::ProtobufTypeInt32>(
-                "code",
-                |m: &WorkspaceError| { &m.code },
-                |m: &mut WorkspaceError| { &mut m.code },
-            ));
-            fields.push(::protobuf::reflect::accessor::make_simple_field_accessor::<_, ::protobuf::types::ProtobufTypeString>(
-                "msg",
-                |m: &WorkspaceError| { &m.msg },
-                |m: &mut WorkspaceError| { &mut m.msg },
-            ));
-            ::protobuf::reflect::MessageDescriptor::new_pb_name::<WorkspaceError>(
-                "WorkspaceError",
-                fields,
-                file_descriptor_proto()
-            )
-        })
-    }
-
-    fn default_instance() -> &'static WorkspaceError {
-        static instance: ::protobuf::rt::LazyV2<WorkspaceError> = ::protobuf::rt::LazyV2::INIT;
-        instance.get(WorkspaceError::new)
-    }
-}
-
-impl ::protobuf::Clear for WorkspaceError {
-    fn clear(&mut self) {
-        self.code = 0;
-        self.msg.clear();
-        self.unknown_fields.clear();
-    }
-}
-
-impl ::std::fmt::Debug for WorkspaceError {
-    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
-        ::protobuf::text_format::fmt(self, f)
-    }
-}
-
-impl ::protobuf::reflect::ProtobufValue for WorkspaceError {
-    fn as_ref(&self) -> ::protobuf::reflect::ReflectValueRef {
-        ::protobuf::reflect::ReflectValueRef::Message(self)
-    }
-}
-
-static file_descriptor_proto_data: &'static [u8] = b"\
-    \n\x0cerrors.proto\"6\n\x0eWorkspaceError\x12\x12\n\x04code\x18\x01\x20\
-    \x01(\x05R\x04code\x12\x10\n\x03msg\x18\x02\x20\x01(\tR\x03msgJ\x98\x01\
-    \n\x06\x12\x04\0\0\x05\x01\n\x08\n\x01\x0c\x12\x03\0\0\x12\n\n\n\x02\x04\
-    \0\x12\x04\x02\0\x05\x01\n\n\n\x03\x04\0\x01\x12\x03\x02\x08\x16\n\x0b\n\
-    \x04\x04\0\x02\0\x12\x03\x03\x04\x13\n\x0c\n\x05\x04\0\x02\0\x05\x12\x03\
-    \x03\x04\t\n\x0c\n\x05\x04\0\x02\0\x01\x12\x03\x03\n\x0e\n\x0c\n\x05\x04\
-    \0\x02\0\x03\x12\x03\x03\x11\x12\n\x0b\n\x04\x04\0\x02\x01\x12\x03\x04\
-    \x04\x13\n\x0c\n\x05\x04\0\x02\x01\x05\x12\x03\x04\x04\n\n\x0c\n\x05\x04\
-    \0\x02\x01\x01\x12\x03\x04\x0b\x0e\n\x0c\n\x05\x04\0\x02\x01\x03\x12\x03\
-    \x04\x11\x12b\x06proto3\
-";
-
-static file_descriptor_proto_lazy: ::protobuf::rt::LazyV2<::protobuf::descriptor::FileDescriptorProto> = ::protobuf::rt::LazyV2::INIT;
-
-fn parse_descriptor_proto() -> ::protobuf::descriptor::FileDescriptorProto {
-    ::protobuf::Message::parse_from_bytes(file_descriptor_proto_data).unwrap()
-}
-
-pub fn file_descriptor_proto() -> &'static ::protobuf::descriptor::FileDescriptorProto {
-    file_descriptor_proto_lazy.get(|| {
-        parse_descriptor_proto()
-    })
-}
diff --git a/frontend/rust-lib/flowy-core/src/protobuf/model/mod.rs b/frontend/rust-lib/flowy-core/src/protobuf/model/mod.rs
index cd35f2090b..b9a7e246fd 100644
--- a/frontend/rust-lib/flowy-core/src/protobuf/model/mod.rs
+++ b/frontend/rust-lib/flowy-core/src/protobuf/model/mod.rs
@@ -4,8 +4,5 @@
 mod observable;
 pub use observable::*;
 
-mod errors;
-pub use errors::*;
-
 mod event;
 pub use event::*;
diff --git a/frontend/rust-lib/flowy-core/src/protobuf/proto/errors.proto b/frontend/rust-lib/flowy-core/src/protobuf/proto/errors.proto
deleted file mode 100644
index b67c663608..0000000000
--- a/frontend/rust-lib/flowy-core/src/protobuf/proto/errors.proto
+++ /dev/null
@@ -1,6 +0,0 @@
-syntax = "proto3";
-
-message WorkspaceError {
-    int32 code = 1;
-    string msg = 2;
-}
diff --git a/frontend/rust-lib/flowy-core/src/services/app/controller.rs b/frontend/rust-lib/flowy-core/src/services/app/controller.rs
index e35b2f9f7b..97065ba8d0 100644
--- a/frontend/rust-lib/flowy-core/src/services/app/controller.rs
+++ b/frontend/rust-lib/flowy-core/src/services/app/controller.rs
@@ -39,20 +39,20 @@ impl AppController {
         }
     }
 
-    pub fn init(&self) -> Result<(), WorkspaceError> {
+    pub fn init(&self) -> Result<(), FlowyError> {
         self.listen_trash_can_event();
         Ok(())
     }
 
     #[tracing::instrument(level = "debug", skip(self, params), fields(name = %params.name) err)]
-    pub(crate) async fn create_app_from_params(&self, params: CreateAppParams) -> Result<App, WorkspaceError> {
+    pub(crate) async fn create_app_from_params(&self, params: CreateAppParams) -> Result<App, FlowyError> {
         let app = self.create_app_on_server(params).await?;
         self.create_app(app).await
     }
 
-    pub(crate) async fn create_app(&self, app: App) -> Result<App, WorkspaceError> {
+    pub(crate) async fn create_app(&self, app: App) -> Result<App, FlowyError> {
         let conn = &*self.database.db_connection()?;
-        conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+        conn.immediate_transaction::<_, FlowyError, _>(|| {
             let _ = self.save_app(app.clone(), &*conn)?;
             let _ = notify_apps_changed(&app.workspace_id, self.trash_can.clone(), conn)?;
             Ok(())
@@ -61,30 +61,30 @@ impl AppController {
         Ok(app)
     }
 
-    pub(crate) fn save_app(&self, app: App, conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn save_app(&self, app: App, conn: &SqliteConnection) -> Result<(), FlowyError> {
         let app_table = AppTable::new(app);
         let _ = AppTableSql::create_app(app_table, &*conn)?;
         Ok(())
     }
 
-    pub(crate) async fn read_app(&self, params: AppIdentifier) -> Result<App, WorkspaceError> {
+    pub(crate) async fn read_app(&self, params: AppIdentifier) -> Result<App, FlowyError> {
         let conn = self.database.db_connection()?;
         let app_table = AppTableSql::read_app(&params.app_id, &*conn)?;
 
         let trash_ids = self.trash_can.trash_ids(&conn)?;
         if trash_ids.contains(&app_table.id) {
-            return Err(WorkspaceError::record_not_found());
+            return Err(FlowyError::record_not_found());
         }
 
         let _ = self.read_app_on_server(params)?;
         Ok(app_table.into())
     }
 
-    pub(crate) async fn update_app(&self, params: UpdateAppParams) -> Result<(), WorkspaceError> {
+    pub(crate) async fn update_app(&self, params: UpdateAppParams) -> Result<(), FlowyError> {
         let changeset = AppTableChangeset::new(params.clone());
         let app_id = changeset.id.clone();
         let conn = &*self.database.db_connection()?;
-        conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+        conn.immediate_transaction::<_, FlowyError, _>(|| {
             let _ = AppTableSql::update_app(changeset, conn)?;
             let app: App = AppTableSql::read_app(&app_id, conn)?.into();
             send_dart_notification(&app_id, WorkspaceNotification::AppUpdated)
@@ -97,10 +97,10 @@ impl AppController {
         Ok(())
     }
 
-    pub(crate) fn read_app_tables(&self, ids: Vec<String>) -> Result<Vec<AppTable>, WorkspaceError> {
+    pub(crate) fn read_app_tables(&self, ids: Vec<String>) -> Result<Vec<AppTable>, FlowyError> {
         let conn = &*self.database.db_connection()?;
         let mut app_tables = vec![];
-        conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+        conn.immediate_transaction::<_, FlowyError, _>(|| {
             for app_id in ids {
                 app_tables.push(AppTableSql::read_app(&app_id, conn)?);
             }
@@ -113,14 +113,14 @@ impl AppController {
 
 impl AppController {
     #[tracing::instrument(level = "debug", skip(self), err)]
-    async fn create_app_on_server(&self, params: CreateAppParams) -> Result<App, WorkspaceError> {
+    async fn create_app_on_server(&self, params: CreateAppParams) -> Result<App, FlowyError> {
         let token = self.user.token()?;
         let app = self.server.create_app(&token, params).await?;
         Ok(app)
     }
 
     #[tracing::instrument(level = "debug", skip(self), err)]
-    fn update_app_on_server(&self, params: UpdateAppParams) -> Result<(), WorkspaceError> {
+    fn update_app_on_server(&self, params: UpdateAppParams) -> Result<(), FlowyError> {
         let token = self.user.token()?;
         let server = self.server.clone();
         tokio::spawn(async move {
@@ -136,7 +136,7 @@ impl AppController {
     }
 
     #[tracing::instrument(level = "debug", skip(self), err)]
-    fn read_app_on_server(&self, params: AppIdentifier) -> Result<(), WorkspaceError> {
+    fn read_app_on_server(&self, params: AppIdentifier) -> Result<(), FlowyError> {
         let token = self.user.token()?;
         let server = self.server.clone();
         let pool = self.database.db_pool()?;
@@ -192,21 +192,21 @@ async fn handle_trash_event(database: Arc<dyn WorkspaceDatabase>, trash_can: Arc
         TrashEvent::NewTrash(identifiers, ret) | TrashEvent::Putback(identifiers, ret) => {
             let result = || {
                 let conn = &*db_result?;
-                let _ = conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+                let _ = conn.immediate_transaction::<_, FlowyError, _>(|| {
                     for identifier in identifiers.items {
                         let app_table = AppTableSql::read_app(&identifier.id, conn)?;
                         let _ = notify_apps_changed(&app_table.workspace_id, trash_can.clone(), conn)?;
                     }
                     Ok(())
                 })?;
-                Ok::<(), WorkspaceError>(())
+                Ok::<(), FlowyError>(())
             };
             let _ = ret.send(result()).await;
         },
         TrashEvent::Delete(identifiers, ret) => {
             let result = || {
                 let conn = &*db_result?;
-                let _ = conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+                let _ = conn.immediate_transaction::<_, FlowyError, _>(|| {
                     let mut notify_ids = HashSet::new();
                     for identifier in identifiers.items {
                         let app_table = AppTableSql::read_app(&identifier.id, conn)?;
@@ -219,7 +219,7 @@ async fn handle_trash_event(database: Arc<dyn WorkspaceDatabase>, trash_can: Arc
                     }
                     Ok(())
                 })?;
-                Ok::<(), WorkspaceError>(())
+                Ok::<(), FlowyError>(())
             };
             let _ = ret.send(result()).await;
         },
@@ -231,7 +231,7 @@ fn notify_apps_changed(
     workspace_id: &str,
     trash_can: Arc<TrashController>,
     conn: &SqliteConnection,
-) -> WorkspaceResult<()> {
+) -> FlowyResult<()> {
     let repeated_app = read_local_workspace_apps(workspace_id, trash_can, conn)?;
     send_dart_notification(workspace_id, WorkspaceNotification::WorkspaceAppsChanged)
         .payload(repeated_app)
@@ -243,7 +243,7 @@ pub fn read_local_workspace_apps(
     workspace_id: &str,
     trash_controller: Arc<TrashController>,
     conn: &SqliteConnection,
-) -> Result<RepeatedApp, WorkspaceError> {
+) -> Result<RepeatedApp, FlowyError> {
     let mut app_tables = AppTableSql::read_workspace_apps(workspace_id, false, conn)?;
     let trash_ids = trash_controller.trash_ids(conn)?;
     app_tables.retain(|app_table| !trash_ids.contains(&app_table.id));
@@ -254,8 +254,8 @@ pub fn read_local_workspace_apps(
 
 // #[tracing::instrument(level = "debug", skip(self), err)]
 // pub(crate) async fn delete_app(&self, app_id: &str) -> Result<(),
-// WorkspaceError> {     let conn = &*self.database.db_connection()?;
-//     conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+// FlowyError> {     let conn = &*self.database.db_connection()?;
+//     conn.immediate_transaction::<_, FlowyError, _>(|| {
 //         let app = AppTableSql::delete_app(app_id, &*conn)?;
 //         let apps = self.read_local_apps(&app.workspace_id, &*conn)?;
 //         send_dart_notification(&app.workspace_id,
@@ -269,7 +269,7 @@ pub fn read_local_workspace_apps(
 // }
 //
 // #[tracing::instrument(level = "debug", skip(self), err)]
-// fn delete_app_on_server(&self, app_id: &str) -> Result<(), WorkspaceError> {
+// fn delete_app_on_server(&self, app_id: &str) -> Result<(), FlowyError> {
 //     let token = self.user.token()?;
 //     let server = self.server.clone();
 //     let params = DeleteAppParams {
@@ -291,7 +291,7 @@ pub fn read_local_workspace_apps(
 //     //             Ok(_) => {},
 //     //             Err(e) => log::error!("Delete app failed: {:?}", e),
 //     //         }
-//     //         Ok::<(), WorkspaceError>(())
+//     //         Ok::<(), FlowyError>(())
 //     //     }
 //     // });
 //     //
diff --git a/frontend/rust-lib/flowy-core/src/services/app/event_handler.rs b/frontend/rust-lib/flowy-core/src/services/app/event_handler.rs
index 011af97ade..5c9cc6f78d 100644
--- a/frontend/rust-lib/flowy-core/src/services/app/event_handler.rs
+++ b/frontend/rust-lib/flowy-core/src/services/app/event_handler.rs
@@ -11,7 +11,7 @@ use crate::{
         },
         trash::Trash,
     },
-    errors::WorkspaceError,
+    errors::FlowyError,
     services::{AppController, TrashController, ViewController},
 };
 use lib_dispatch::prelude::{data_result, Data, DataResult, Unit};
@@ -20,7 +20,7 @@ use std::{convert::TryInto, sync::Arc};
 pub(crate) async fn create_app_handler(
     data: Data<CreateAppRequest>,
     controller: Unit<Arc<AppController>>,
-) -> DataResult<App, WorkspaceError> {
+) -> DataResult<App, FlowyError> {
     let params: CreateAppParams = data.into_inner().try_into()?;
     let detail = controller.create_app_from_params(params).await?;
 
@@ -31,7 +31,7 @@ pub(crate) async fn delete_app_handler(
     data: Data<QueryAppRequest>,
     controller: Unit<Arc<AppController>>,
     trash_can: Unit<Arc<TrashController>>,
-) -> Result<(), WorkspaceError> {
+) -> Result<(), FlowyError> {
     let params: AppIdentifier = data.into_inner().try_into()?;
     let trash = controller
         .read_app_tables(vec![params.app_id])?
@@ -47,7 +47,7 @@ pub(crate) async fn delete_app_handler(
 pub(crate) async fn update_app_handler(
     data: Data<UpdateAppRequest>,
     controller: Unit<Arc<AppController>>,
-) -> Result<(), WorkspaceError> {
+) -> Result<(), FlowyError> {
     let params: UpdateAppParams = data.into_inner().try_into()?;
     let _ = controller.update_app(params).await?;
     Ok(())
@@ -58,7 +58,7 @@ pub(crate) async fn read_app_handler(
     data: Data<QueryAppRequest>,
     app_controller: Unit<Arc<AppController>>,
     view_controller: Unit<Arc<ViewController>>,
-) -> DataResult<App, WorkspaceError> {
+) -> DataResult<App, FlowyError> {
     let params: AppIdentifier = data.into_inner().try_into()?;
     let mut app = app_controller.read_app(params.clone()).await?;
     app.belongings = view_controller.read_views_belong_to(&params.app_id).await?;
diff --git a/frontend/rust-lib/flowy-core/src/services/app/sql.rs b/frontend/rust-lib/flowy-core/src/services/app/sql.rs
index 12b08d55e9..204e3950f6 100644
--- a/frontend/rust-lib/flowy-core/src/services/app/sql.rs
+++ b/frontend/rust-lib/flowy-core/src/services/app/sql.rs
@@ -15,12 +15,12 @@ use flowy_database::{
 use serde::{Deserialize, Serialize, __private::TryFrom};
 use std::convert::TryInto;
 
-use crate::errors::WorkspaceError;
+use crate::errors::FlowyError;
 
 pub struct AppTableSql {}
 
 impl AppTableSql {
-    pub(crate) fn create_app(app_table: AppTable, conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn create_app(app_table: AppTable, conn: &SqliteConnection) -> Result<(), FlowyError> {
         match diesel_record_count!(app_table, &app_table.id, conn) {
             0 => diesel_insert_table!(app_table, &app_table, conn),
             _ => {
@@ -31,12 +31,12 @@ impl AppTableSql {
         Ok(())
     }
 
-    pub(crate) fn update_app(changeset: AppTableChangeset, conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn update_app(changeset: AppTableChangeset, conn: &SqliteConnection) -> Result<(), FlowyError> {
         diesel_update_table!(app_table, changeset, conn);
         Ok(())
     }
 
-    pub(crate) fn read_app(app_id: &str, conn: &SqliteConnection) -> Result<AppTable, WorkspaceError> {
+    pub(crate) fn read_app(app_id: &str, conn: &SqliteConnection) -> Result<AppTable, FlowyError> {
         let filter = dsl::app_table.filter(app_table::id.eq(app_id)).into_boxed();
         let app_table = filter.first::<AppTable>(conn)?;
         Ok(app_table)
@@ -46,7 +46,7 @@ impl AppTableSql {
         workspace_id: &str,
         is_trash: bool,
         conn: &SqliteConnection,
-    ) -> Result<Vec<AppTable>, WorkspaceError> {
+    ) -> Result<Vec<AppTable>, FlowyError> {
         let app_table = dsl::app_table
             .filter(app_table::workspace_id.eq(workspace_id))
             .filter(app_table::is_trash.eq(is_trash))
@@ -56,7 +56,7 @@ impl AppTableSql {
         Ok(app_table)
     }
 
-    pub(crate) fn delete_app(app_id: &str, conn: &SqliteConnection) -> Result<AppTable, WorkspaceError> {
+    pub(crate) fn delete_app(app_id: &str, conn: &SqliteConnection) -> Result<AppTable, FlowyError> {
         let app_table = dsl::app_table
             .filter(app_table::id.eq(app_id))
             .first::<AppTable>(conn)?;
@@ -67,10 +67,10 @@ impl AppTableSql {
     // pub(crate) fn read_views_belong_to_app(
     //     &self,
     //     app_id: &str,
-    // ) -> Result<Vec<ViewTable>, WorkspaceError> {
+    // ) -> Result<Vec<ViewTable>, FlowyError> {
     //     let conn = self.database.db_connection()?;
     //
-    //     let views = conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+    //     let views = conn.immediate_transaction::<_, FlowyError, _>(|| {
     //         let app_table: AppTable = dsl::app_table
     //             .filter(app_table::id.eq(app_id))
     //             .first::<AppTable>(&*(conn))?;
diff --git a/frontend/rust-lib/flowy-core/src/services/server/mod.rs b/frontend/rust-lib/flowy-core/src/services/server/mod.rs
index 940ba5d6d3..ad47f5201a 100644
--- a/frontend/rust-lib/flowy-core/src/services/server/mod.rs
+++ b/frontend/rust-lib/flowy-core/src/services/server/mod.rs
@@ -12,7 +12,7 @@ use crate::{
         view::{CreateViewParams, UpdateViewParams, View, ViewIdentifier, ViewIdentifiers},
         workspace::{CreateWorkspaceParams, RepeatedWorkspace, UpdateWorkspaceParams, Workspace, WorkspaceIdentifier},
     },
-    errors::WorkspaceError,
+    errors::FlowyError,
 };
 use backend_service::configuration::ClientServerConfiguration;
 use lib_infra::future::FutureResult;
@@ -24,42 +24,38 @@ pub trait WorkspaceServerAPI {
     fn init(&self);
 
     // Workspace
-    fn create_workspace(&self, token: &str, params: CreateWorkspaceParams) -> FutureResult<Workspace, WorkspaceError>;
+    fn create_workspace(&self, token: &str, params: CreateWorkspaceParams) -> FutureResult<Workspace, FlowyError>;
 
-    fn read_workspace(
-        &self,
-        token: &str,
-        params: WorkspaceIdentifier,
-    ) -> FutureResult<RepeatedWorkspace, WorkspaceError>;
+    fn read_workspace(&self, token: &str, params: WorkspaceIdentifier) -> FutureResult<RepeatedWorkspace, FlowyError>;
 
-    fn update_workspace(&self, token: &str, params: UpdateWorkspaceParams) -> FutureResult<(), WorkspaceError>;
+    fn update_workspace(&self, token: &str, params: UpdateWorkspaceParams) -> FutureResult<(), FlowyError>;
 
-    fn delete_workspace(&self, token: &str, params: WorkspaceIdentifier) -> FutureResult<(), WorkspaceError>;
+    fn delete_workspace(&self, token: &str, params: WorkspaceIdentifier) -> FutureResult<(), FlowyError>;
 
     // View
-    fn create_view(&self, token: &str, params: CreateViewParams) -> FutureResult<View, WorkspaceError>;
+    fn create_view(&self, token: &str, params: CreateViewParams) -> FutureResult<View, FlowyError>;
 
-    fn read_view(&self, token: &str, params: ViewIdentifier) -> FutureResult<Option<View>, WorkspaceError>;
+    fn read_view(&self, token: &str, params: ViewIdentifier) -> FutureResult<Option<View>, FlowyError>;
 
-    fn delete_view(&self, token: &str, params: ViewIdentifiers) -> FutureResult<(), WorkspaceError>;
+    fn delete_view(&self, token: &str, params: ViewIdentifiers) -> FutureResult<(), FlowyError>;
 
-    fn update_view(&self, token: &str, params: UpdateViewParams) -> FutureResult<(), WorkspaceError>;
+    fn update_view(&self, token: &str, params: UpdateViewParams) -> FutureResult<(), FlowyError>;
 
     // App
-    fn create_app(&self, token: &str, params: CreateAppParams) -> FutureResult<App, WorkspaceError>;
+    fn create_app(&self, token: &str, params: CreateAppParams) -> FutureResult<App, FlowyError>;
 
-    fn read_app(&self, token: &str, params: AppIdentifier) -> FutureResult<Option<App>, WorkspaceError>;
+    fn read_app(&self, token: &str, params: AppIdentifier) -> FutureResult<Option<App>, FlowyError>;
 
-    fn update_app(&self, token: &str, params: UpdateAppParams) -> FutureResult<(), WorkspaceError>;
+    fn update_app(&self, token: &str, params: UpdateAppParams) -> FutureResult<(), FlowyError>;
 
-    fn delete_app(&self, token: &str, params: AppIdentifier) -> FutureResult<(), WorkspaceError>;
+    fn delete_app(&self, token: &str, params: AppIdentifier) -> FutureResult<(), FlowyError>;
 
     // Trash
-    fn create_trash(&self, token: &str, params: TrashIdentifiers) -> FutureResult<(), WorkspaceError>;
+    fn create_trash(&self, token: &str, params: TrashIdentifiers) -> FutureResult<(), FlowyError>;
 
-    fn delete_trash(&self, token: &str, params: TrashIdentifiers) -> FutureResult<(), WorkspaceError>;
+    fn delete_trash(&self, token: &str, params: TrashIdentifiers) -> FutureResult<(), FlowyError>;
 
-    fn read_trash(&self, token: &str) -> FutureResult<RepeatedTrash, WorkspaceError>;
+    fn read_trash(&self, token: &str) -> FutureResult<RepeatedTrash, FlowyError>;
 }
 
 pub(crate) fn construct_workspace_server(
diff --git a/frontend/rust-lib/flowy-core/src/services/server/server_api.rs b/frontend/rust-lib/flowy-core/src/services/server/server_api.rs
index 68fadd59af..d3bee512fb 100644
--- a/frontend/rust-lib/flowy-core/src/services/server/server_api.rs
+++ b/frontend/rust-lib/flowy-core/src/services/server/server_api.rs
@@ -5,12 +5,11 @@ use crate::{
         view::{CreateViewParams, UpdateViewParams, View, ViewIdentifier, ViewIdentifiers},
         workspace::{CreateWorkspaceParams, RepeatedWorkspace, UpdateWorkspaceParams, Workspace, WorkspaceIdentifier},
     },
-    errors::WorkspaceError,
+    errors::{ErrorCode, FlowyError},
     notify::{send_dart_notification, WorkspaceNotification},
     services::server::WorkspaceServerAPI,
 };
 use backend_service::{configuration::ClientServerConfiguration, middleware::*, workspace_request::*};
-use flowy_core_infra::errors::ErrorCode;
 use lib_infra::future::FutureResult;
 
 pub struct WorkspaceHttpServer {
@@ -26,7 +25,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         let mut rx = BACKEND_API_MIDDLEWARE.invalid_token_subscribe();
         tokio::spawn(async move {
             while let Ok(invalid_token) = rx.recv().await {
-                let error = WorkspaceError::new(ErrorCode::UserUnauthorized, "");
+                let error = FlowyError::new(ErrorCode::UserUnauthorized, "");
                 send_dart_notification(&invalid_token, WorkspaceNotification::UserUnauthorized)
                     .error(error)
                     .send()
@@ -34,7 +33,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         });
     }
 
-    fn create_workspace(&self, token: &str, params: CreateWorkspaceParams) -> FutureResult<Workspace, WorkspaceError> {
+    fn create_workspace(&self, token: &str, params: CreateWorkspaceParams) -> FutureResult<Workspace, FlowyError> {
         let token = token.to_owned();
         let url = self.config.workspace_url();
         FutureResult::new(async move {
@@ -43,11 +42,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn read_workspace(
-        &self,
-        token: &str,
-        params: WorkspaceIdentifier,
-    ) -> FutureResult<RepeatedWorkspace, WorkspaceError> {
+    fn read_workspace(&self, token: &str, params: WorkspaceIdentifier) -> FutureResult<RepeatedWorkspace, FlowyError> {
         let token = token.to_owned();
         let url = self.config.workspace_url();
         FutureResult::new(async move {
@@ -56,7 +51,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn update_workspace(&self, token: &str, params: UpdateWorkspaceParams) -> FutureResult<(), WorkspaceError> {
+    fn update_workspace(&self, token: &str, params: UpdateWorkspaceParams) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.workspace_url();
         FutureResult::new(async move {
@@ -65,7 +60,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn delete_workspace(&self, token: &str, params: WorkspaceIdentifier) -> FutureResult<(), WorkspaceError> {
+    fn delete_workspace(&self, token: &str, params: WorkspaceIdentifier) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.workspace_url();
         FutureResult::new(async move {
@@ -74,7 +69,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn create_view(&self, token: &str, params: CreateViewParams) -> FutureResult<View, WorkspaceError> {
+    fn create_view(&self, token: &str, params: CreateViewParams) -> FutureResult<View, FlowyError> {
         let token = token.to_owned();
         let url = self.config.view_url();
         FutureResult::new(async move {
@@ -83,7 +78,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn read_view(&self, token: &str, params: ViewIdentifier) -> FutureResult<Option<View>, WorkspaceError> {
+    fn read_view(&self, token: &str, params: ViewIdentifier) -> FutureResult<Option<View>, FlowyError> {
         let token = token.to_owned();
         let url = self.config.view_url();
         FutureResult::new(async move {
@@ -92,7 +87,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn delete_view(&self, token: &str, params: ViewIdentifiers) -> FutureResult<(), WorkspaceError> {
+    fn delete_view(&self, token: &str, params: ViewIdentifiers) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.view_url();
         FutureResult::new(async move {
@@ -101,7 +96,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn update_view(&self, token: &str, params: UpdateViewParams) -> FutureResult<(), WorkspaceError> {
+    fn update_view(&self, token: &str, params: UpdateViewParams) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.view_url();
         FutureResult::new(async move {
@@ -110,7 +105,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn create_app(&self, token: &str, params: CreateAppParams) -> FutureResult<App, WorkspaceError> {
+    fn create_app(&self, token: &str, params: CreateAppParams) -> FutureResult<App, FlowyError> {
         let token = token.to_owned();
         let url = self.config.app_url();
         FutureResult::new(async move {
@@ -119,7 +114,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn read_app(&self, token: &str, params: AppIdentifier) -> FutureResult<Option<App>, WorkspaceError> {
+    fn read_app(&self, token: &str, params: AppIdentifier) -> FutureResult<Option<App>, FlowyError> {
         let token = token.to_owned();
         let url = self.config.app_url();
         FutureResult::new(async move {
@@ -128,7 +123,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn update_app(&self, token: &str, params: UpdateAppParams) -> FutureResult<(), WorkspaceError> {
+    fn update_app(&self, token: &str, params: UpdateAppParams) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.app_url();
         FutureResult::new(async move {
@@ -137,7 +132,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn delete_app(&self, token: &str, params: AppIdentifier) -> FutureResult<(), WorkspaceError> {
+    fn delete_app(&self, token: &str, params: AppIdentifier) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.app_url();
         FutureResult::new(async move {
@@ -146,7 +141,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn create_trash(&self, token: &str, params: TrashIdentifiers) -> FutureResult<(), WorkspaceError> {
+    fn create_trash(&self, token: &str, params: TrashIdentifiers) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.trash_url();
         FutureResult::new(async move {
@@ -155,7 +150,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn delete_trash(&self, token: &str, params: TrashIdentifiers) -> FutureResult<(), WorkspaceError> {
+    fn delete_trash(&self, token: &str, params: TrashIdentifiers) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.trash_url();
         FutureResult::new(async move {
@@ -164,7 +159,7 @@ impl WorkspaceServerAPI for WorkspaceHttpServer {
         })
     }
 
-    fn read_trash(&self, token: &str) -> FutureResult<RepeatedTrash, WorkspaceError> {
+    fn read_trash(&self, token: &str) -> FutureResult<RepeatedTrash, FlowyError> {
         let token = token.to_owned();
         let url = self.config.trash_url();
         FutureResult::new(async move {
diff --git a/frontend/rust-lib/flowy-core/src/services/server/server_api_mock.rs b/frontend/rust-lib/flowy-core/src/services/server/server_api_mock.rs
index 336d0d9c53..dabc9dd055 100644
--- a/frontend/rust-lib/flowy-core/src/services/server/server_api_mock.rs
+++ b/frontend/rust-lib/flowy-core/src/services/server/server_api_mock.rs
@@ -5,7 +5,7 @@ use crate::{
         view::{CreateViewParams, RepeatedView, UpdateViewParams, View, ViewIdentifier, ViewIdentifiers},
         workspace::{CreateWorkspaceParams, RepeatedWorkspace, UpdateWorkspaceParams, Workspace, WorkspaceIdentifier},
     },
-    errors::WorkspaceError,
+    errors::FlowyError,
     services::server::WorkspaceServerAPI,
 };
 use lib_infra::{future::FutureResult, timestamp, uuid};
@@ -15,7 +15,7 @@ pub struct WorkspaceServerMock {}
 impl WorkspaceServerAPI for WorkspaceServerMock {
     fn init(&self) {}
 
-    fn create_workspace(&self, _token: &str, params: CreateWorkspaceParams) -> FutureResult<Workspace, WorkspaceError> {
+    fn create_workspace(&self, _token: &str, params: CreateWorkspaceParams) -> FutureResult<Workspace, FlowyError> {
         let time = timestamp();
         let workspace = Workspace {
             id: uuid(),
@@ -33,22 +33,22 @@ impl WorkspaceServerAPI for WorkspaceServerMock {
         &self,
         _token: &str,
         _params: WorkspaceIdentifier,
-    ) -> FutureResult<RepeatedWorkspace, WorkspaceError> {
+    ) -> FutureResult<RepeatedWorkspace, FlowyError> {
         FutureResult::new(async {
             let repeated_workspace = RepeatedWorkspace { items: vec![] };
             Ok(repeated_workspace)
         })
     }
 
-    fn update_workspace(&self, _token: &str, _params: UpdateWorkspaceParams) -> FutureResult<(), WorkspaceError> {
+    fn update_workspace(&self, _token: &str, _params: UpdateWorkspaceParams) -> FutureResult<(), FlowyError> {
         FutureResult::new(async { Ok(()) })
     }
 
-    fn delete_workspace(&self, _token: &str, _params: WorkspaceIdentifier) -> FutureResult<(), WorkspaceError> {
+    fn delete_workspace(&self, _token: &str, _params: WorkspaceIdentifier) -> FutureResult<(), FlowyError> {
         FutureResult::new(async { Ok(()) })
     }
 
-    fn create_view(&self, _token: &str, params: CreateViewParams) -> FutureResult<View, WorkspaceError> {
+    fn create_view(&self, _token: &str, params: CreateViewParams) -> FutureResult<View, FlowyError> {
         let time = timestamp();
         let view = View {
             id: uuid(),
@@ -64,19 +64,19 @@ impl WorkspaceServerAPI for WorkspaceServerMock {
         FutureResult::new(async { Ok(view) })
     }
 
-    fn read_view(&self, _token: &str, _params: ViewIdentifier) -> FutureResult<Option<View>, WorkspaceError> {
+    fn read_view(&self, _token: &str, _params: ViewIdentifier) -> FutureResult<Option<View>, FlowyError> {
         FutureResult::new(async { Ok(None) })
     }
 
-    fn delete_view(&self, _token: &str, _params: ViewIdentifiers) -> FutureResult<(), WorkspaceError> {
+    fn delete_view(&self, _token: &str, _params: ViewIdentifiers) -> FutureResult<(), FlowyError> {
         FutureResult::new(async { Ok(()) })
     }
 
-    fn update_view(&self, _token: &str, _params: UpdateViewParams) -> FutureResult<(), WorkspaceError> {
+    fn update_view(&self, _token: &str, _params: UpdateViewParams) -> FutureResult<(), FlowyError> {
         FutureResult::new(async { Ok(()) })
     }
 
-    fn create_app(&self, _token: &str, params: CreateAppParams) -> FutureResult<App, WorkspaceError> {
+    fn create_app(&self, _token: &str, params: CreateAppParams) -> FutureResult<App, FlowyError> {
         let time = timestamp();
         let app = App {
             id: uuid(),
@@ -91,27 +91,27 @@ impl WorkspaceServerAPI for WorkspaceServerMock {
         FutureResult::new(async { Ok(app) })
     }
 
-    fn read_app(&self, _token: &str, _params: AppIdentifier) -> FutureResult<Option<App>, WorkspaceError> {
+    fn read_app(&self, _token: &str, _params: AppIdentifier) -> FutureResult<Option<App>, FlowyError> {
         FutureResult::new(async { Ok(None) })
     }
 
-    fn update_app(&self, _token: &str, _params: UpdateAppParams) -> FutureResult<(), WorkspaceError> {
+    fn update_app(&self, _token: &str, _params: UpdateAppParams) -> FutureResult<(), FlowyError> {
         FutureResult::new(async { Ok(()) })
     }
 
-    fn delete_app(&self, _token: &str, _params: AppIdentifier) -> FutureResult<(), WorkspaceError> {
+    fn delete_app(&self, _token: &str, _params: AppIdentifier) -> FutureResult<(), FlowyError> {
         FutureResult::new(async { Ok(()) })
     }
 
-    fn create_trash(&self, _token: &str, _params: TrashIdentifiers) -> FutureResult<(), WorkspaceError> {
+    fn create_trash(&self, _token: &str, _params: TrashIdentifiers) -> FutureResult<(), FlowyError> {
         FutureResult::new(async { Ok(()) })
     }
 
-    fn delete_trash(&self, _token: &str, _params: TrashIdentifiers) -> FutureResult<(), WorkspaceError> {
+    fn delete_trash(&self, _token: &str, _params: TrashIdentifiers) -> FutureResult<(), FlowyError> {
         FutureResult::new(async { Ok(()) })
     }
 
-    fn read_trash(&self, _token: &str) -> FutureResult<RepeatedTrash, WorkspaceError> {
+    fn read_trash(&self, _token: &str) -> FutureResult<RepeatedTrash, FlowyError> {
         FutureResult::new(async {
             let repeated_trash = RepeatedTrash { items: vec![] };
             Ok(repeated_trash)
diff --git a/frontend/rust-lib/flowy-core/src/services/trash/controller.rs b/frontend/rust-lib/flowy-core/src/services/trash/controller.rs
index 670111860b..b878baac59 100644
--- a/frontend/rust-lib/flowy-core/src/services/trash/controller.rs
+++ b/frontend/rust-lib/flowy-core/src/services/trash/controller.rs
@@ -1,6 +1,6 @@
 use crate::{
     entities::trash::{RepeatedTrash, Trash, TrashIdentifier, TrashIdentifiers, TrashType},
-    errors::{WorkspaceError, WorkspaceResult},
+    errors::{FlowyError, FlowyResult},
     module::{WorkspaceDatabase, WorkspaceUser},
     notify::{send_anonymous_dart_notification, WorkspaceNotification},
     services::{server::Server, trash::sql::TrashTableSql},
@@ -29,21 +29,21 @@ impl TrashController {
         }
     }
 
-    pub(crate) fn init(&self) -> Result<(), WorkspaceError> { Ok(()) }
+    pub(crate) fn init(&self) -> Result<(), FlowyError> { Ok(()) }
 
     #[tracing::instrument(level = "debug", skip(self), fields(putback)  err)]
-    pub async fn putback(&self, trash_id: &str) -> WorkspaceResult<()> {
-        let (tx, mut rx) = mpsc::channel::<WorkspaceResult<()>>(1);
+    pub async fn putback(&self, trash_id: &str) -> FlowyResult<()> {
+        let (tx, mut rx) = mpsc::channel::<FlowyResult<()>>(1);
         let trash_table = TrashTableSql::read(trash_id, &*self.database.db_connection()?)?;
         let _ = thread::scope(|_s| {
             let conn = self.database.db_connection()?;
-            conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+            conn.immediate_transaction::<_, FlowyError, _>(|| {
                 let _ = TrashTableSql::delete_trash(trash_id, &*conn)?;
                 notify_trash_changed(TrashTableSql::read_all(&conn)?);
                 Ok(())
             })?;
 
-            Ok::<(), WorkspaceError>(())
+            Ok::<(), FlowyError>(())
         })
         .unwrap()?;
 
@@ -64,10 +64,10 @@ impl TrashController {
     }
 
     #[tracing::instrument(level = "debug", skip(self)  err)]
-    pub async fn restore_all(&self) -> WorkspaceResult<()> {
+    pub async fn restore_all(&self) -> FlowyResult<()> {
         let repeated_trash = thread::scope(|_s| {
             let conn = self.database.db_connection()?;
-            conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+            conn.immediate_transaction::<_, FlowyError, _>(|| {
                 let repeated_trash = TrashTableSql::read_all(&*conn)?;
                 let _ = TrashTableSql::delete_all(&*conn)?;
                 Ok(repeated_trash)
@@ -76,7 +76,7 @@ impl TrashController {
         .unwrap()?;
 
         let identifiers: TrashIdentifiers = repeated_trash.items.clone().into();
-        let (tx, mut rx) = mpsc::channel::<WorkspaceResult<()>>(1);
+        let (tx, mut rx) = mpsc::channel::<FlowyResult<()>>(1);
         let _ = self.notify.send(TrashEvent::Putback(identifiers, tx));
         let _ = rx.recv().await;
 
@@ -86,7 +86,7 @@ impl TrashController {
     }
 
     #[tracing::instrument(level = "debug", skip(self), err)]
-    pub async fn delete_all(&self) -> WorkspaceResult<()> {
+    pub async fn delete_all(&self) -> FlowyResult<()> {
         let repeated_trash = TrashTableSql::read_all(&*(self.database.db_connection()?))?;
         let trash_identifiers: TrashIdentifiers = repeated_trash.items.clone().into();
         let _ = self.delete_with_identifiers(trash_identifiers.clone()).await?;
@@ -97,7 +97,7 @@ impl TrashController {
     }
 
     #[tracing::instrument(level = "debug", skip(self), err)]
-    pub async fn delete(&self, trash_identifiers: TrashIdentifiers) -> WorkspaceResult<()> {
+    pub async fn delete(&self, trash_identifiers: TrashIdentifiers) -> FlowyResult<()> {
         let _ = self.delete_with_identifiers(trash_identifiers.clone()).await?;
         notify_trash_changed(TrashTableSql::read_all(&*(self.database.db_connection()?))?);
         let _ = self.delete_trash_on_server(trash_identifiers)?;
@@ -106,8 +106,8 @@ impl TrashController {
     }
 
     #[tracing::instrument(level = "debug", skip(self), fields(delete_trash_ids), err)]
-    pub async fn delete_with_identifiers(&self, trash_identifiers: TrashIdentifiers) -> WorkspaceResult<()> {
-        let (tx, mut rx) = mpsc::channel::<WorkspaceResult<()>>(1);
+    pub async fn delete_with_identifiers(&self, trash_identifiers: TrashIdentifiers) -> FlowyResult<()> {
+        let (tx, mut rx) = mpsc::channel::<FlowyResult<()>>(1);
         tracing::Span::current().record("delete_trash_ids", &format!("{}", trash_identifiers).as_str());
         let _ = self.notify.send(TrashEvent::Delete(trash_identifiers.clone(), tx));
 
@@ -120,7 +120,7 @@ impl TrashController {
         }
 
         let conn = self.database.db_connection()?;
-        conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+        conn.immediate_transaction::<_, FlowyError, _>(|| {
             for trash_identifier in &trash_identifiers.items {
                 let _ = TrashTableSql::delete_trash(&trash_identifier.id, &conn)?;
             }
@@ -136,8 +136,8 @@ impl TrashController {
     // CREATE and DROP tables operations because those are auto-commit in the
     // database.
     #[tracing::instrument(name = "add_trash", level = "debug", skip(self, trash), fields(trash_ids), err)]
-    pub async fn add<T: Into<Trash>>(&self, trash: Vec<T>) -> Result<(), WorkspaceError> {
-        let (tx, mut rx) = mpsc::channel::<WorkspaceResult<()>>(1);
+    pub async fn add<T: Into<Trash>>(&self, trash: Vec<T>) -> Result<(), FlowyError> {
+        let (tx, mut rx) = mpsc::channel::<FlowyResult<()>>(1);
         let repeated_trash = trash.into_iter().map(|t| t.into()).collect::<Vec<Trash>>();
         let identifiers = repeated_trash
             .iter()
@@ -157,14 +157,14 @@ impl TrashController {
         );
         let _ = thread::scope(|_s| {
             let conn = self.database.db_connection()?;
-            conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+            conn.immediate_transaction::<_, FlowyError, _>(|| {
                 let _ = TrashTableSql::create_trash(repeated_trash.clone(), &*conn)?;
                 let _ = self.create_trash_on_server(repeated_trash);
 
                 notify_trash_changed(TrashTableSql::read_all(&conn)?);
                 Ok(())
             })?;
-            Ok::<(), WorkspaceError>(())
+            Ok::<(), FlowyError>(())
         })
         .unwrap()?;
 
@@ -176,13 +176,13 @@ impl TrashController {
 
     pub fn subscribe(&self) -> broadcast::Receiver<TrashEvent> { self.notify.subscribe() }
 
-    pub fn read_trash(&self, conn: &SqliteConnection) -> Result<RepeatedTrash, WorkspaceError> {
+    pub fn read_trash(&self, conn: &SqliteConnection) -> Result<RepeatedTrash, FlowyError> {
         let repeated_trash = TrashTableSql::read_all(&*conn)?;
         let _ = self.read_trash_on_server()?;
         Ok(repeated_trash)
     }
 
-    pub fn trash_ids(&self, conn: &SqliteConnection) -> Result<Vec<String>, WorkspaceError> {
+    pub fn trash_ids(&self, conn: &SqliteConnection) -> Result<Vec<String>, FlowyError> {
         let ids = TrashTableSql::read_all(&*conn)?
             .into_inner()
             .into_iter()
@@ -194,7 +194,7 @@ impl TrashController {
 
 impl TrashController {
     #[tracing::instrument(level = "debug", skip(self, trash), err)]
-    fn create_trash_on_server<T: Into<TrashIdentifiers>>(&self, trash: T) -> WorkspaceResult<()> {
+    fn create_trash_on_server<T: Into<TrashIdentifiers>>(&self, trash: T) -> FlowyResult<()> {
         let token = self.user.token()?;
         let trash_identifiers = trash.into();
         let server = self.server.clone();
@@ -209,7 +209,7 @@ impl TrashController {
     }
 
     #[tracing::instrument(level = "debug", skip(self, trash), err)]
-    fn delete_trash_on_server<T: Into<TrashIdentifiers>>(&self, trash: T) -> WorkspaceResult<()> {
+    fn delete_trash_on_server<T: Into<TrashIdentifiers>>(&self, trash: T) -> FlowyResult<()> {
         let token = self.user.token()?;
         let trash_identifiers = trash.into();
         let server = self.server.clone();
@@ -223,7 +223,7 @@ impl TrashController {
     }
 
     #[tracing::instrument(level = "debug", skip(self), err)]
-    fn read_trash_on_server(&self) -> WorkspaceResult<()> {
+    fn read_trash_on_server(&self) -> FlowyResult<()> {
         let token = self.user.token()?;
         let server = self.server.clone();
         let pool = self.database.db_pool()?;
@@ -234,7 +234,7 @@ impl TrashController {
                     tracing::debug!("Remote trash count: {}", repeated_trash.items.len());
                     match pool.get() {
                         Ok(conn) => {
-                            let result = conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+                            let result = conn.immediate_transaction::<_, FlowyError, _>(|| {
                                 let _ = TrashTableSql::create_trash(repeated_trash.items.clone(), &*conn)?;
                                 TrashTableSql::read_all(&conn)
                             });
@@ -256,7 +256,7 @@ impl TrashController {
     }
 
     #[tracing::instrument(level = "debug", skip(self), err)]
-    async fn delete_all_trash_on_server(&self) -> WorkspaceResult<()> {
+    async fn delete_all_trash_on_server(&self) -> FlowyResult<()> {
         let token = self.user.token()?;
         let server = self.server.clone();
         server.delete_trash(&token, TrashIdentifiers::all()).await
@@ -273,9 +273,9 @@ fn notify_trash_changed(repeated_trash: RepeatedTrash) {
 
 #[derive(Clone)]
 pub enum TrashEvent {
-    NewTrash(TrashIdentifiers, mpsc::Sender<WorkspaceResult<()>>),
-    Putback(TrashIdentifiers, mpsc::Sender<WorkspaceResult<()>>),
-    Delete(TrashIdentifiers, mpsc::Sender<WorkspaceResult<()>>),
+    NewTrash(TrashIdentifiers, mpsc::Sender<FlowyResult<()>>),
+    Putback(TrashIdentifiers, mpsc::Sender<FlowyResult<()>>),
+    Delete(TrashIdentifiers, mpsc::Sender<FlowyResult<()>>),
 }
 
 impl std::fmt::Debug for TrashEvent {
diff --git a/frontend/rust-lib/flowy-core/src/services/trash/event_handler.rs b/frontend/rust-lib/flowy-core/src/services/trash/event_handler.rs
index 3b72f630c0..10656ae8b3 100644
--- a/frontend/rust-lib/flowy-core/src/services/trash/event_handler.rs
+++ b/frontend/rust-lib/flowy-core/src/services/trash/event_handler.rs
@@ -1,6 +1,6 @@
 use crate::{
     entities::trash::{RepeatedTrash, TrashIdentifier, TrashIdentifiers},
-    errors::WorkspaceError,
+    errors::FlowyError,
     services::TrashController,
 };
 use lib_dispatch::prelude::{data_result, Data, DataResult, Unit};
@@ -9,7 +9,7 @@ use std::sync::Arc;
 #[tracing::instrument(skip(controller), err)]
 pub(crate) async fn read_trash_handler(
     controller: Unit<Arc<TrashController>>,
-) -> DataResult<RepeatedTrash, WorkspaceError> {
+) -> DataResult<RepeatedTrash, FlowyError> {
     let conn = controller.database.db_connection()?;
     let repeated_trash = controller.read_trash(&conn)?;
     data_result(repeated_trash)
@@ -19,7 +19,7 @@ pub(crate) async fn read_trash_handler(
 pub(crate) async fn putback_trash_handler(
     identifier: Data<TrashIdentifier>,
     controller: Unit<Arc<TrashController>>,
-) -> Result<(), WorkspaceError> {
+) -> Result<(), FlowyError> {
     let _ = controller.putback(&identifier.id).await?;
     Ok(())
 }
@@ -28,19 +28,19 @@ pub(crate) async fn putback_trash_handler(
 pub(crate) async fn delete_trash_handler(
     identifiers: Data<TrashIdentifiers>,
     controller: Unit<Arc<TrashController>>,
-) -> Result<(), WorkspaceError> {
+) -> Result<(), FlowyError> {
     let _ = controller.delete(identifiers.into_inner()).await?;
     Ok(())
 }
 
 #[tracing::instrument(skip(controller), err)]
-pub(crate) async fn restore_all_handler(controller: Unit<Arc<TrashController>>) -> Result<(), WorkspaceError> {
+pub(crate) async fn restore_all_handler(controller: Unit<Arc<TrashController>>) -> Result<(), FlowyError> {
     let _ = controller.restore_all().await?;
     Ok(())
 }
 
 #[tracing::instrument(skip(controller), err)]
-pub(crate) async fn delete_all_handler(controller: Unit<Arc<TrashController>>) -> Result<(), WorkspaceError> {
+pub(crate) async fn delete_all_handler(controller: Unit<Arc<TrashController>>) -> Result<(), FlowyError> {
     let _ = controller.delete_all().await?;
     Ok(())
 }
diff --git a/frontend/rust-lib/flowy-core/src/services/trash/sql.rs b/frontend/rust-lib/flowy-core/src/services/trash/sql.rs
index b65b448a96..092cbe4ff4 100644
--- a/frontend/rust-lib/flowy-core/src/services/trash/sql.rs
+++ b/frontend/rust-lib/flowy-core/src/services/trash/sql.rs
@@ -1,6 +1,6 @@
 use crate::{
     entities::trash::{RepeatedTrash, Trash, TrashType},
-    errors::WorkspaceError,
+    errors::FlowyError,
 };
 use diesel::sql_types::Integer;
 use flowy_database::{
@@ -12,7 +12,7 @@ use flowy_database::{
 pub struct TrashTableSql {}
 
 impl TrashTableSql {
-    pub(crate) fn create_trash(repeated_trash: Vec<Trash>, conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn create_trash(repeated_trash: Vec<Trash>, conn: &SqliteConnection) -> Result<(), FlowyError> {
         for trash in repeated_trash {
             let trash_table: TrashTable = trash.into();
             match diesel_record_count!(trash_table, &trash_table.id, conn) {
@@ -27,25 +27,25 @@ impl TrashTableSql {
         Ok(())
     }
 
-    pub(crate) fn read_all(conn: &SqliteConnection) -> Result<RepeatedTrash, WorkspaceError> {
+    pub(crate) fn read_all(conn: &SqliteConnection) -> Result<RepeatedTrash, FlowyError> {
         let trash_tables = dsl::trash_table.load::<TrashTable>(conn)?;
         let items = trash_tables.into_iter().map(|t| t.into()).collect::<Vec<Trash>>();
         Ok(RepeatedTrash { items })
     }
 
-    pub(crate) fn delete_all(conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn delete_all(conn: &SqliteConnection) -> Result<(), FlowyError> {
         let _ = diesel::delete(dsl::trash_table).execute(conn)?;
         Ok(())
     }
 
-    pub(crate) fn read(trash_id: &str, conn: &SqliteConnection) -> Result<TrashTable, WorkspaceError> {
+    pub(crate) fn read(trash_id: &str, conn: &SqliteConnection) -> Result<TrashTable, FlowyError> {
         let trash_table = dsl::trash_table
             .filter(trash_table::id.eq(trash_id))
             .first::<TrashTable>(conn)?;
         Ok(trash_table)
     }
 
-    pub(crate) fn delete_trash(trash_id: &str, conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn delete_trash(trash_id: &str, conn: &SqliteConnection) -> Result<(), FlowyError> {
         diesel_delete_table!(trash_table, trash_id, conn);
         Ok(())
     }
diff --git a/frontend/rust-lib/flowy-core/src/services/view/controller.rs b/frontend/rust-lib/flowy-core/src/services/view/controller.rs
index d6ff221383..da9370fc96 100644
--- a/frontend/rust-lib/flowy-core/src/services/view/controller.rs
+++ b/frontend/rust-lib/flowy-core/src/services/view/controller.rs
@@ -8,7 +8,7 @@ use crate::{
         trash::{TrashIdentifiers, TrashType},
         view::{CreateViewParams, RepeatedView, UpdateViewParams, View, ViewIdentifier},
     },
-    errors::{internal_error, WorkspaceError, WorkspaceResult},
+    errors::{internal_error, FlowyError, FlowyResult},
     module::{WorkspaceDatabase, WorkspaceUser},
     notify::{send_dart_notification, WorkspaceNotification},
     services::{
@@ -49,23 +49,23 @@ impl ViewController {
         }
     }
 
-    pub(crate) fn init(&self) -> Result<(), WorkspaceError> {
+    pub(crate) fn init(&self) -> Result<(), FlowyError> {
         let _ = self.document.init()?;
         self.listen_trash_can_event();
         Ok(())
     }
 
     #[tracing::instrument(level = "debug", skip(self, params), fields(name = %params.name), err)]
-    pub(crate) async fn create_view_from_params(&self, params: CreateViewParams) -> Result<View, WorkspaceError> {
+    pub(crate) async fn create_view_from_params(&self, params: CreateViewParams) -> Result<View, FlowyError> {
         let view = self.create_view_on_server(params.clone()).await?;
         self.create_view(view).await
     }
 
-    pub(crate) async fn create_view(&self, view: View) -> Result<View, WorkspaceError> {
+    pub(crate) async fn create_view(&self, view: View) -> Result<View, FlowyError> {
         let conn = &*self.database.db_connection()?;
         let trash_can = self.trash_can.clone();
 
-        conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+        conn.immediate_transaction::<_, FlowyError, _>(|| {
             let _ = self.save_view(view.clone(), conn)?;
             let _ = notify_views_changed(&view.belong_to_id, trash_can, &conn)?;
 
@@ -75,20 +75,20 @@ impl ViewController {
         Ok(view)
     }
 
-    pub(crate) fn save_view(&self, view: View, conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn save_view(&self, view: View, conn: &SqliteConnection) -> Result<(), FlowyError> {
         let view_table = ViewTable::new(view);
         let _ = ViewTableSql::create_view(view_table, conn)?;
         Ok(())
     }
 
     #[tracing::instrument(skip(self, params), fields(view_id = %params.view_id), err)]
-    pub(crate) async fn read_view(&self, params: ViewIdentifier) -> Result<View, WorkspaceError> {
+    pub(crate) async fn read_view(&self, params: ViewIdentifier) -> Result<View, FlowyError> {
         let conn = self.database.db_connection()?;
         let view_table = ViewTableSql::read_view(&params.view_id, &*conn)?;
 
         let trash_ids = self.trash_can.trash_ids(&conn)?;
         if trash_ids.contains(&view_table.id) {
-            return Err(WorkspaceError::record_not_found());
+            return Err(FlowyError::record_not_found());
         }
 
         let view: View = view_table.into();
@@ -96,10 +96,10 @@ impl ViewController {
         Ok(view)
     }
 
-    pub(crate) fn read_view_tables(&self, ids: Vec<String>) -> Result<Vec<ViewTable>, WorkspaceError> {
+    pub(crate) fn read_view_tables(&self, ids: Vec<String>) -> Result<Vec<ViewTable>, FlowyError> {
         let conn = &*self.database.db_connection()?;
         let mut view_tables = vec![];
-        conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+        conn.immediate_transaction::<_, FlowyError, _>(|| {
             for view_id in ids {
                 view_tables.push(ViewTableSql::read_view(&view_id, conn)?);
             }
@@ -110,7 +110,7 @@ impl ViewController {
     }
 
     #[tracing::instrument(level = "debug", skip(self, params), fields(doc_id = %params.doc_id), err)]
-    pub(crate) async fn open_view(&self, params: DocIdentifier) -> Result<DocDelta, WorkspaceError> {
+    pub(crate) async fn open_view(&self, params: DocIdentifier) -> Result<DocDelta, FlowyError> {
         let doc_id = params.doc_id.clone();
         let edit_context = self.document.open(params).await?;
 
@@ -119,13 +119,13 @@ impl ViewController {
     }
 
     #[tracing::instrument(level = "debug", skip(self,params), fields(doc_id = %params.doc_id), err)]
-    pub(crate) async fn close_view(&self, params: DocIdentifier) -> Result<(), WorkspaceError> {
+    pub(crate) async fn close_view(&self, params: DocIdentifier) -> Result<(), FlowyError> {
         let _ = self.document.close(params).await?;
         Ok(())
     }
 
     #[tracing::instrument(level = "debug", skip(self,params), fields(doc_id = %params.doc_id), err)]
-    pub(crate) async fn delete_view(&self, params: DocIdentifier) -> Result<(), WorkspaceError> {
+    pub(crate) async fn delete_view(&self, params: DocIdentifier) -> Result<(), FlowyError> {
         if let Some(view_id) = KV::get_str(LATEST_VIEW_ID) {
             if view_id == params.doc_id {
                 let _ = KV::remove(LATEST_VIEW_ID);
@@ -136,7 +136,7 @@ impl ViewController {
     }
 
     #[tracing::instrument(level = "debug", skip(self, params), fields(doc_id = %params.doc_id), err)]
-    pub(crate) async fn duplicate_view(&self, params: DocIdentifier) -> Result<(), WorkspaceError> {
+    pub(crate) async fn duplicate_view(&self, params: DocIdentifier) -> Result<(), FlowyError> {
         let view: View = ViewTableSql::read_view(&params.doc_id, &*self.database.db_connection()?)?.into();
         let delta_data = self
             .document
@@ -157,7 +157,7 @@ impl ViewController {
     }
 
     #[tracing::instrument(level = "debug", skip(self, params), err)]
-    pub(crate) async fn export_doc(&self, params: ExportParams) -> Result<ExportData, WorkspaceError> {
+    pub(crate) async fn export_doc(&self, params: ExportParams) -> Result<ExportData, FlowyError> {
         let doc_identifier: DocIdentifier = params.doc_id.into();
         let doc = self
             .document
@@ -172,7 +172,7 @@ impl ViewController {
 
     // belong_to_id will be the app_id or view_id.
     #[tracing::instrument(level = "debug", skip(self), err)]
-    pub(crate) async fn read_views_belong_to(&self, belong_to_id: &str) -> Result<RepeatedView, WorkspaceError> {
+    pub(crate) async fn read_views_belong_to(&self, belong_to_id: &str) -> Result<RepeatedView, FlowyError> {
         // TODO: read from server
         let conn = self.database.db_connection()?;
         let repeated_view = read_local_belonging_view(belong_to_id, self.trash_can.clone(), &conn)?;
@@ -180,12 +180,12 @@ impl ViewController {
     }
 
     #[tracing::instrument(level = "debug", skip(self, params), err)]
-    pub(crate) async fn update_view(&self, params: UpdateViewParams) -> Result<View, WorkspaceError> {
+    pub(crate) async fn update_view(&self, params: UpdateViewParams) -> Result<View, FlowyError> {
         let conn = &*self.database.db_connection()?;
         let changeset = ViewTableChangeset::new(params.clone());
         let view_id = changeset.id.clone();
 
-        let updated_view = conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+        let updated_view = conn.immediate_transaction::<_, FlowyError, _>(|| {
             let _ = ViewTableSql::update_view(changeset, conn)?;
             let view: View = ViewTableSql::read_view(&view_id, conn)?.into();
             Ok(view)
@@ -201,12 +201,12 @@ impl ViewController {
         Ok(updated_view)
     }
 
-    pub(crate) async fn apply_doc_delta(&self, params: DocDelta) -> Result<DocDelta, WorkspaceError> {
+    pub(crate) async fn apply_doc_delta(&self, params: DocDelta) -> Result<DocDelta, FlowyError> {
         let doc = self.document.apply_doc_delta(params).await?;
         Ok(doc)
     }
 
-    pub(crate) fn latest_visit_view(&self) -> WorkspaceResult<Option<View>> {
+    pub(crate) fn latest_visit_view(&self) -> FlowyResult<Option<View>> {
         match KV::get_str(LATEST_VIEW_ID) {
             None => Ok(None),
             Some(view_id) => {
@@ -222,14 +222,14 @@ impl ViewController {
 
 impl ViewController {
     #[tracing::instrument(skip(self), err)]
-    async fn create_view_on_server(&self, params: CreateViewParams) -> Result<View, WorkspaceError> {
+    async fn create_view_on_server(&self, params: CreateViewParams) -> Result<View, FlowyError> {
         let token = self.user.token()?;
         let view = self.server.create_view(&token, params).await?;
         Ok(view)
     }
 
     #[tracing::instrument(skip(self), err)]
-    fn update_view_on_server(&self, params: UpdateViewParams) -> Result<(), WorkspaceError> {
+    fn update_view_on_server(&self, params: UpdateViewParams) -> Result<(), FlowyError> {
         let token = self.user.token()?;
         let server = self.server.clone();
         tokio::spawn(async move {
@@ -245,7 +245,7 @@ impl ViewController {
     }
 
     #[tracing::instrument(skip(self), err)]
-    fn read_view_on_server(&self, params: ViewIdentifier) -> Result<(), WorkspaceError> {
+    fn read_view_on_server(&self, params: ViewIdentifier) -> Result<(), FlowyError> {
         let token = self.user.token()?;
         let server = self.server.clone();
         let pool = self.database.db_pool()?;
@@ -314,7 +314,7 @@ async fn handle_trash_event(
                     let _ = notify_views_changed(&view_table.belong_to_id, trash_can.clone(), conn)?;
                     notify_dart(view_table, WorkspaceNotification::ViewDeleted);
                 }
-                Ok::<(), WorkspaceError>(())
+                Ok::<(), FlowyError>(())
             };
             let _ = ret.send(result()).await;
         },
@@ -326,14 +326,14 @@ async fn handle_trash_event(
                     let _ = notify_views_changed(&view_table.belong_to_id, trash_can.clone(), conn)?;
                     notify_dart(view_table, WorkspaceNotification::ViewRestored);
                 }
-                Ok::<(), WorkspaceError>(())
+                Ok::<(), FlowyError>(())
             };
             let _ = ret.send(result()).await;
         },
         TrashEvent::Delete(identifiers, ret) => {
             let result = || {
                 let conn = &*db_result?;
-                let _ = conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+                let _ = conn.immediate_transaction::<_, FlowyError, _>(|| {
                     let mut notify_ids = HashSet::new();
                     for identifier in identifiers.items {
                         let view_table = ViewTableSql::read_view(&identifier.id, conn)?;
@@ -348,19 +348,16 @@ async fn handle_trash_event(
 
                     Ok(())
                 })?;
-                Ok::<(), WorkspaceError>(())
+                Ok::<(), FlowyError>(())
             };
             let _ = ret.send(result()).await;
         },
     }
 }
 
-fn get_view_table_from(
-    identifiers: TrashIdentifiers,
-    conn: &SqliteConnection,
-) -> Result<Vec<ViewTable>, WorkspaceError> {
+fn get_view_table_from(identifiers: TrashIdentifiers, conn: &SqliteConnection) -> Result<Vec<ViewTable>, FlowyError> {
     let mut view_tables = vec![];
-    let _ = conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+    let _ = conn.immediate_transaction::<_, FlowyError, _>(|| {
         for identifier in identifiers.items {
             let view_table = ViewTableSql::read_view(&identifier.id, conn)?;
             view_tables.push(view_table);
@@ -380,7 +377,7 @@ fn notify_views_changed(
     belong_to_id: &str,
     trash_can: Arc<TrashController>,
     conn: &SqliteConnection,
-) -> WorkspaceResult<()> {
+) -> FlowyResult<()> {
     let repeated_view = read_local_belonging_view(belong_to_id, trash_can.clone(), conn)?;
     tracing::Span::current().record("view_count", &format!("{}", repeated_view.len()).as_str());
     send_dart_notification(&belong_to_id, WorkspaceNotification::AppViewsChanged)
@@ -393,7 +390,7 @@ fn read_local_belonging_view(
     belong_to_id: &str,
     trash_can: Arc<TrashController>,
     conn: &SqliteConnection,
-) -> WorkspaceResult<RepeatedView> {
+) -> FlowyResult<RepeatedView> {
     let mut view_tables = ViewTableSql::read_views(belong_to_id, conn)?;
     let trash_ids = trash_can.trash_ids(conn)?;
     view_tables.retain(|view_table| !trash_ids.contains(&view_table.id));
diff --git a/frontend/rust-lib/flowy-core/src/services/view/event_handler.rs b/frontend/rust-lib/flowy-core/src/services/view/event_handler.rs
index 1f5a1e3b80..b042e8e670 100644
--- a/frontend/rust-lib/flowy-core/src/services/view/event_handler.rs
+++ b/frontend/rust-lib/flowy-core/src/services/view/event_handler.rs
@@ -12,7 +12,7 @@ use crate::{
             ViewIdentifiers,
         },
     },
-    errors::WorkspaceError,
+    errors::FlowyError,
     services::{TrashController, ViewController},
 };
 use flowy_collaboration::entities::doc::DocDelta;
@@ -23,7 +23,7 @@ use std::{convert::TryInto, sync::Arc};
 pub(crate) async fn create_view_handler(
     data: Data<CreateViewRequest>,
     controller: Unit<Arc<ViewController>>,
-) -> DataResult<View, WorkspaceError> {
+) -> DataResult<View, FlowyError> {
     let params: CreateViewParams = data.into_inner().try_into()?;
     let view = controller.create_view_from_params(params).await?;
     data_result(view)
@@ -32,7 +32,7 @@ pub(crate) async fn create_view_handler(
 pub(crate) async fn read_view_handler(
     data: Data<QueryViewRequest>,
     controller: Unit<Arc<ViewController>>,
-) -> DataResult<View, WorkspaceError> {
+) -> DataResult<View, FlowyError> {
     let params: ViewIdentifier = data.into_inner().try_into()?;
     let mut view = controller.read_view(params.clone()).await?;
     view.belongings = controller.read_views_belong_to(&params.view_id).await?;
@@ -44,7 +44,7 @@ pub(crate) async fn read_view_handler(
 pub(crate) async fn update_view_handler(
     data: Data<UpdateViewRequest>,
     controller: Unit<Arc<ViewController>>,
-) -> Result<(), WorkspaceError> {
+) -> Result<(), FlowyError> {
     let params: UpdateViewParams = data.into_inner().try_into()?;
     let _ = controller.update_view(params).await?;
 
@@ -54,7 +54,7 @@ pub(crate) async fn update_view_handler(
 pub(crate) async fn apply_doc_delta_handler(
     data: Data<DocDelta>,
     controller: Unit<Arc<ViewController>>,
-) -> DataResult<DocDelta, WorkspaceError> {
+) -> DataResult<DocDelta, FlowyError> {
     // let params: DocDelta = data.into_inner().try_into()?;
     let doc = controller.apply_doc_delta(data.into_inner()).await?;
     data_result(doc)
@@ -64,7 +64,7 @@ pub(crate) async fn delete_view_handler(
     data: Data<QueryViewRequest>,
     controller: Unit<Arc<ViewController>>,
     trash_can: Unit<Arc<TrashController>>,
-) -> Result<(), WorkspaceError> {
+) -> Result<(), FlowyError> {
     let params: ViewIdentifiers = data.into_inner().try_into()?;
     for view_id in &params.view_ids {
         let _ = controller.delete_view(view_id.into()).await;
@@ -83,7 +83,7 @@ pub(crate) async fn delete_view_handler(
 pub(crate) async fn open_view_handler(
     data: Data<QueryViewRequest>,
     controller: Unit<Arc<ViewController>>,
-) -> DataResult<DocDelta, WorkspaceError> {
+) -> DataResult<DocDelta, FlowyError> {
     let params: ViewIdentifier = data.into_inner().try_into()?;
     let doc = controller.open_view(params.into()).await?;
     data_result(doc)
@@ -92,7 +92,7 @@ pub(crate) async fn open_view_handler(
 pub(crate) async fn close_view_handler(
     data: Data<QueryViewRequest>,
     controller: Unit<Arc<ViewController>>,
-) -> Result<(), WorkspaceError> {
+) -> Result<(), FlowyError> {
     let params: ViewIdentifier = data.into_inner().try_into()?;
     let _ = controller.close_view(params.into()).await?;
     Ok(())
@@ -102,7 +102,7 @@ pub(crate) async fn close_view_handler(
 pub(crate) async fn duplicate_view_handler(
     data: Data<QueryViewRequest>,
     controller: Unit<Arc<ViewController>>,
-) -> Result<(), WorkspaceError> {
+) -> Result<(), FlowyError> {
     let params: ViewIdentifier = data.into_inner().try_into()?;
     let _ = controller.duplicate_view(params.into()).await?;
     Ok(())
@@ -112,7 +112,7 @@ pub(crate) async fn duplicate_view_handler(
 pub(crate) async fn export_handler(
     data: Data<ExportRequest>,
     controller: Unit<Arc<ViewController>>,
-) -> DataResult<ExportData, WorkspaceError> {
+) -> DataResult<ExportData, FlowyError> {
     let params: ExportParams = data.into_inner().try_into()?;
     let data = controller.export_doc(params).await?;
     data_result(data)
diff --git a/frontend/rust-lib/flowy-core/src/services/view/sql.rs b/frontend/rust-lib/flowy-core/src/services/view/sql.rs
index fedd6310bb..b33c6fbb18 100644
--- a/frontend/rust-lib/flowy-core/src/services/view/sql.rs
+++ b/frontend/rust-lib/flowy-core/src/services/view/sql.rs
@@ -3,7 +3,7 @@ use crate::{
         trash::{Trash, TrashType},
         view::{RepeatedView, UpdateViewParams, View, ViewType},
     },
-    errors::WorkspaceError,
+    errors::FlowyError,
     services::app::sql::AppTable,
 };
 use diesel::sql_types::Integer;
@@ -17,7 +17,7 @@ use lib_infra::timestamp;
 pub struct ViewTableSql {}
 
 impl ViewTableSql {
-    pub(crate) fn create_view(view_table: ViewTable, conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn create_view(view_table: ViewTable, conn: &SqliteConnection) -> Result<(), FlowyError> {
         match diesel_record_count!(view_table, &view_table.id, conn) {
             0 => diesel_insert_table!(view_table, &view_table, conn),
             _ => {
@@ -28,7 +28,7 @@ impl ViewTableSql {
         Ok(())
     }
 
-    pub(crate) fn read_view(view_id: &str, conn: &SqliteConnection) -> Result<ViewTable, WorkspaceError> {
+    pub(crate) fn read_view(view_id: &str, conn: &SqliteConnection) -> Result<ViewTable, FlowyError> {
         // https://docs.diesel.rs/diesel/query_builder/struct.UpdateStatement.html
         // let mut filter =
         // dsl::view_table.filter(view_table::id.eq(view_id)).into_boxed();
@@ -44,7 +44,7 @@ impl ViewTableSql {
     }
 
     // belong_to_id will be the app_id or view_id.
-    pub(crate) fn read_views(belong_to_id: &str, conn: &SqliteConnection) -> Result<Vec<ViewTable>, WorkspaceError> {
+    pub(crate) fn read_views(belong_to_id: &str, conn: &SqliteConnection) -> Result<Vec<ViewTable>, FlowyError> {
         let view_tables = dsl::view_table
             .filter(view_table::belong_to_id.eq(belong_to_id))
             .order(view_table::create_time.asc())
@@ -54,12 +54,12 @@ impl ViewTableSql {
         Ok(view_tables)
     }
 
-    pub(crate) fn update_view(changeset: ViewTableChangeset, conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn update_view(changeset: ViewTableChangeset, conn: &SqliteConnection) -> Result<(), FlowyError> {
         diesel_update_table!(view_table, changeset, conn);
         Ok(())
     }
 
-    pub(crate) fn delete_view(view_id: &str, conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn delete_view(view_id: &str, conn: &SqliteConnection) -> Result<(), FlowyError> {
         diesel_delete_table!(view_table, view_id, conn);
         Ok(())
     }
@@ -69,7 +69,7 @@ impl ViewTableSql {
 //     belong_to_id: &str,
 //     is_trash: Option<bool>,
 //     conn: &SqliteConnection,
-// ) -> Result<RepeatedView, WorkspaceError> {
+// ) -> Result<RepeatedView, FlowyError> {
 //     let views = dsl::view_table
 //         .inner_join(trash_table::dsl::trash_table.on(trash_id.ne(view_table::
 // id)))         .filter(view_table::belong_to_id.eq(belong_to_id))
diff --git a/frontend/rust-lib/flowy-core/src/services/workspace/controller.rs b/frontend/rust-lib/flowy-core/src/services/workspace/controller.rs
index aebda93def..0c04928707 100644
--- a/frontend/rust-lib/flowy-core/src/services/workspace/controller.rs
+++ b/frontend/rust-lib/flowy-core/src/services/workspace/controller.rs
@@ -35,17 +35,17 @@ impl WorkspaceController {
         }
     }
 
-    pub(crate) fn init(&self) -> Result<(), WorkspaceError> { Ok(()) }
+    pub(crate) fn init(&self) -> Result<(), FlowyError> { Ok(()) }
 
     pub(crate) async fn create_workspace_from_params(
         &self,
         params: CreateWorkspaceParams,
-    ) -> Result<Workspace, WorkspaceError> {
+    ) -> Result<Workspace, FlowyError> {
         let workspace = self.create_workspace_on_server(params.clone()).await?;
         self.create_workspace(workspace).await
     }
 
-    pub(crate) async fn create_workspace(&self, workspace: Workspace) -> Result<Workspace, WorkspaceError> {
+    pub(crate) async fn create_workspace(&self, workspace: Workspace) -> Result<Workspace, FlowyError> {
         let user_id = self.user.user_id()?;
         let token = self.user.token()?;
         let workspace_table = WorkspaceTable::new(workspace.clone(), &user_id);
@@ -61,7 +61,7 @@ impl WorkspaceController {
         // immediately. EXCLUSIVE and IMMEDIATE are the same in WAL mode, but in
         // other journaling modes, EXCLUSIVE prevents other database connections from
         // reading the database while the transaction is underway.
-        conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+        conn.immediate_transaction::<_, FlowyError, _>(|| {
             WorkspaceTableSql::create_workspace(workspace_table, conn)?;
             let repeated_workspace = self.read_local_workspaces(None, &user_id, conn)?;
             send_dart_notification(&token, WorkspaceNotification::UserCreateWorkspace)
@@ -77,11 +77,11 @@ impl WorkspaceController {
     }
 
     #[allow(dead_code)]
-    pub(crate) async fn update_workspace(&self, params: UpdateWorkspaceParams) -> Result<(), WorkspaceError> {
+    pub(crate) async fn update_workspace(&self, params: UpdateWorkspaceParams) -> Result<(), FlowyError> {
         let changeset = WorkspaceTableChangeset::new(params.clone());
         let workspace_id = changeset.id.clone();
         let conn = &*self.database.db_connection()?;
-        conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+        conn.immediate_transaction::<_, FlowyError, _>(|| {
             let _ = WorkspaceTableSql::update_workspace(changeset, conn)?;
             let user_id = self.user.user_id()?;
             let workspace = self.read_local_workspace(workspace_id.clone(), &user_id, conn)?;
@@ -98,11 +98,11 @@ impl WorkspaceController {
     }
 
     #[allow(dead_code)]
-    pub(crate) async fn delete_workspace(&self, workspace_id: &str) -> Result<(), WorkspaceError> {
+    pub(crate) async fn delete_workspace(&self, workspace_id: &str) -> Result<(), FlowyError> {
         let user_id = self.user.user_id()?;
         let token = self.user.token()?;
         let conn = &*self.database.db_connection()?;
-        conn.immediate_transaction::<_, WorkspaceError, _>(|| {
+        conn.immediate_transaction::<_, FlowyError, _>(|| {
             let _ = WorkspaceTableSql::delete_workspace(workspace_id, conn)?;
             let repeated_workspace = self.read_local_workspaces(None, &user_id, conn)?;
             send_dart_notification(&token, WorkspaceNotification::UserDeleteWorkspace)
@@ -116,7 +116,7 @@ impl WorkspaceController {
         Ok(())
     }
 
-    pub(crate) async fn open_workspace(&self, params: WorkspaceIdentifier) -> Result<Workspace, WorkspaceError> {
+    pub(crate) async fn open_workspace(&self, params: WorkspaceIdentifier) -> Result<Workspace, FlowyError> {
         let user_id = self.user.user_id()?;
         let conn = self.database.db_connection()?;
         if let Some(workspace_id) = params.workspace_id {
@@ -124,11 +124,11 @@ impl WorkspaceController {
             set_current_workspace(&workspace.id);
             Ok(workspace)
         } else {
-            return Err(WorkspaceError::workspace_id().context("Opened workspace id should not be empty"));
+            return Err(FlowyError::workspace_id().context("Opened workspace id should not be empty"));
         }
     }
 
-    pub(crate) async fn read_current_workspace_apps(&self) -> Result<RepeatedApp, WorkspaceError> {
+    pub(crate) async fn read_current_workspace_apps(&self) -> Result<RepeatedApp, FlowyError> {
         let workspace_id = get_current_workspace()?;
         let conn = self.database.db_connection()?;
         let repeated_app = self.read_local_apps(&workspace_id, &*conn)?;
@@ -142,7 +142,7 @@ impl WorkspaceController {
         workspace_id: Option<String>,
         user_id: &str,
         conn: &SqliteConnection,
-    ) -> Result<RepeatedWorkspace, WorkspaceError> {
+    ) -> Result<RepeatedWorkspace, FlowyError> {
         let workspace_id = workspace_id.to_owned();
         let workspace_tables = WorkspaceTableSql::read_workspaces(workspace_id, user_id, conn)?;
 
@@ -159,11 +159,11 @@ impl WorkspaceController {
         workspace_id: String,
         user_id: &str,
         conn: &SqliteConnection,
-    ) -> Result<Workspace, WorkspaceError> {
+    ) -> Result<Workspace, FlowyError> {
         // Opti: fetch single workspace from local db
         let mut repeated_workspace = self.read_local_workspaces(Some(workspace_id.clone()), user_id, conn)?;
         if repeated_workspace.is_empty() {
-            return Err(WorkspaceError::record_not_found().context(format!("{} workspace not found", workspace_id)));
+            return Err(FlowyError::record_not_found().context(format!("{} workspace not found", workspace_id)));
         }
 
         debug_assert_eq!(repeated_workspace.len(), 1);
@@ -172,7 +172,7 @@ impl WorkspaceController {
     }
 
     #[tracing::instrument(level = "debug", skip(self, conn), err)]
-    fn read_local_apps(&self, workspace_id: &str, conn: &SqliteConnection) -> Result<RepeatedApp, WorkspaceError> {
+    fn read_local_apps(&self, workspace_id: &str, conn: &SqliteConnection) -> Result<RepeatedApp, FlowyError> {
         let repeated_app = read_local_workspace_apps(workspace_id, self.trash_controller.clone(), conn)?;
         Ok(repeated_app)
     }
@@ -180,14 +180,14 @@ impl WorkspaceController {
 
 impl WorkspaceController {
     #[tracing::instrument(level = "debug", skip(self), err)]
-    async fn create_workspace_on_server(&self, params: CreateWorkspaceParams) -> Result<Workspace, WorkspaceError> {
+    async fn create_workspace_on_server(&self, params: CreateWorkspaceParams) -> Result<Workspace, FlowyError> {
         let token = self.user.token()?;
         let workspace = self.server.create_workspace(&token, params).await?;
         Ok(workspace)
     }
 
     #[tracing::instrument(level = "debug", skip(self), err)]
-    fn update_workspace_on_server(&self, params: UpdateWorkspaceParams) -> Result<(), WorkspaceError> {
+    fn update_workspace_on_server(&self, params: UpdateWorkspaceParams) -> Result<(), FlowyError> {
         let (token, server) = (self.user.token()?, self.server.clone());
         tokio::spawn(async move {
             match server.update_workspace(&token, params).await {
@@ -202,7 +202,7 @@ impl WorkspaceController {
     }
 
     #[tracing::instrument(level = "debug", skip(self), err)]
-    fn delete_workspace_on_server(&self, workspace_id: &str) -> Result<(), WorkspaceError> {
+    fn delete_workspace_on_server(&self, workspace_id: &str) -> Result<(), FlowyError> {
         let params = WorkspaceIdentifier {
             workspace_id: Some(workspace_id.to_string()),
         };
@@ -224,10 +224,12 @@ const CURRENT_WORKSPACE_ID: &str = "current_workspace_id";
 
 fn set_current_workspace(workspace_id: &str) { KV::set_str(CURRENT_WORKSPACE_ID, workspace_id.to_owned()); }
 
-pub fn get_current_workspace() -> Result<String, WorkspaceError> {
+pub fn get_current_workspace() -> Result<String, FlowyError> {
     match KV::get_str(CURRENT_WORKSPACE_ID) {
-        None => Err(WorkspaceError::record_not_found()
-            .context("Current workspace not found or should call open workspace first")),
+        None => {
+            Err(FlowyError::record_not_found()
+                .context("Current workspace not found or should call open workspace first"))
+        },
         Some(workspace_id) => Ok(workspace_id),
     }
 }
diff --git a/frontend/rust-lib/flowy-core/src/services/workspace/event_handler.rs b/frontend/rust-lib/flowy-core/src/services/workspace/event_handler.rs
index 7f04b7f56c..8d7eaf9658 100644
--- a/frontend/rust-lib/flowy-core/src/services/workspace/event_handler.rs
+++ b/frontend/rust-lib/flowy-core/src/services/workspace/event_handler.rs
@@ -1,4 +1,4 @@
-use crate::{errors::WorkspaceError, services::WorkspaceController};
+use crate::{errors::FlowyError, services::WorkspaceController};
 
 use flowy_core_infra::entities::{app::RepeatedApp, workspace::*};
 use lib_dispatch::prelude::{data_result, Data, DataResult, Unit};
@@ -8,7 +8,7 @@ use std::{convert::TryInto, sync::Arc};
 pub(crate) async fn create_workspace_handler(
     data: Data<CreateWorkspaceRequest>,
     controller: Unit<Arc<WorkspaceController>>,
-) -> DataResult<Workspace, WorkspaceError> {
+) -> DataResult<Workspace, FlowyError> {
     let controller = controller.get_ref().clone();
     let params: CreateWorkspaceParams = data.into_inner().try_into()?;
     let detail = controller.create_workspace_from_params(params).await?;
@@ -18,7 +18,7 @@ pub(crate) async fn create_workspace_handler(
 #[tracing::instrument(skip(controller), err)]
 pub(crate) async fn read_workspace_apps_handler(
     controller: Unit<Arc<WorkspaceController>>,
-) -> DataResult<RepeatedApp, WorkspaceError> {
+) -> DataResult<RepeatedApp, FlowyError> {
     let repeated_app = controller.read_current_workspace_apps().await?;
     data_result(repeated_app)
 }
@@ -27,7 +27,7 @@ pub(crate) async fn read_workspace_apps_handler(
 pub(crate) async fn open_workspace_handler(
     data: Data<QueryWorkspaceRequest>,
     controller: Unit<Arc<WorkspaceController>>,
-) -> DataResult<Workspace, WorkspaceError> {
+) -> DataResult<Workspace, FlowyError> {
     let params: WorkspaceIdentifier = data.into_inner().try_into()?;
     let workspaces = controller.open_workspace(params).await?;
     data_result(workspaces)
diff --git a/frontend/rust-lib/flowy-core/src/services/workspace/sql.rs b/frontend/rust-lib/flowy-core/src/services/workspace/sql.rs
index bda1a8def9..6c0cf294ab 100644
--- a/frontend/rust-lib/flowy-core/src/services/workspace/sql.rs
+++ b/frontend/rust-lib/flowy-core/src/services/workspace/sql.rs
@@ -3,7 +3,7 @@ use crate::{
         app::RepeatedApp,
         workspace::{UpdateWorkspaceParams, Workspace},
     },
-    errors::WorkspaceError,
+    errors::FlowyError,
 };
 use diesel::SqliteConnection;
 use flowy_database::{
@@ -13,7 +13,7 @@ use flowy_database::{
 pub(crate) struct WorkspaceTableSql {}
 
 impl WorkspaceTableSql {
-    pub(crate) fn create_workspace(table: WorkspaceTable, conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn create_workspace(table: WorkspaceTable, conn: &SqliteConnection) -> Result<(), FlowyError> {
         match diesel_record_count!(workspace_table, &table.id, conn) {
             0 => diesel_insert_table!(workspace_table, &table, conn),
             _ => {
@@ -28,7 +28,7 @@ impl WorkspaceTableSql {
         workspace_id: Option<String>,
         user_id: &str,
         conn: &SqliteConnection,
-    ) -> Result<Vec<WorkspaceTable>, WorkspaceError> {
+    ) -> Result<Vec<WorkspaceTable>, FlowyError> {
         let mut filter = dsl::workspace_table
             .filter(workspace_table::user_id.eq(user_id))
             .order(workspace_table::create_time.asc())
@@ -47,13 +47,13 @@ impl WorkspaceTableSql {
     pub(crate) fn update_workspace(
         changeset: WorkspaceTableChangeset,
         conn: &SqliteConnection,
-    ) -> Result<(), WorkspaceError> {
+    ) -> Result<(), FlowyError> {
         diesel_update_table!(workspace_table, changeset, conn);
         Ok(())
     }
 
     #[allow(dead_code)]
-    pub(crate) fn delete_workspace(workspace_id: &str, conn: &SqliteConnection) -> Result<(), WorkspaceError> {
+    pub(crate) fn delete_workspace(workspace_id: &str, conn: &SqliteConnection) -> Result<(), FlowyError> {
         diesel_delete_table!(workspace_table, workspace_id, conn);
         Ok(())
     }
diff --git a/frontend/rust-lib/flowy-document/Cargo.toml b/frontend/rust-lib/flowy-document/Cargo.toml
index 2f949ff0f9..6c01690360 100644
--- a/frontend/rust-lib/flowy-document/Cargo.toml
+++ b/frontend/rust-lib/flowy-document/Cargo.toml
@@ -9,17 +9,17 @@ edition = "2018"
 [dependencies]
 flowy-collaboration = { path = "../../../shared-lib/flowy-collaboration" }
 flowy-derive = { path = "../../../shared-lib/flowy-derive" }
+backend-service = { path = "../../../shared-lib/backend-service" }
 lib-ot = { path = "../../../shared-lib/lib-ot" }
 lib-ws = { path = "../../../shared-lib/lib-ws" }
-backend-service = { path = "../../../shared-lib/backend-service" }
 lib-infra = { path = "../../../shared-lib/lib-infra" }
 
 derive_more = {version = "0.99", features = ["display"]}
 lib-dispatch = { path = "../lib-dispatch" }
 flowy-database = { path = "../flowy-database" }
+flowy-error = { path = "../flowy-error", features = ["collaboration", "ot", "backend", "serde", "db"] }
 dart-notify = { path = "../dart-notify" }
 
-
 diesel = {version = "1.4.8", features = ["sqlite"]}
 diesel_derives = {version = "1.4.1", features = ["sqlite"]}
 protobuf = {version = "2.18.0"}
diff --git a/frontend/rust-lib/flowy-document/src/errors.rs b/frontend/rust-lib/flowy-document/src/errors.rs
deleted file mode 100644
index 526799dcb5..0000000000
--- a/frontend/rust-lib/flowy-document/src/errors.rs
+++ /dev/null
@@ -1,138 +0,0 @@
-use backend_service::errors::ServerError;
-use bytes::Bytes;
-use derive_more::Display;
-use flowy_derive::{ProtoBuf, ProtoBuf_Enum};
-use lib_dispatch::prelude::{EventResponse, ResponseBuilder};
-use std::{convert::TryInto, fmt};
-
-pub type DocResult<T> = std::result::Result<T, DocError>;
-
-#[derive(Debug, Default, Clone, ProtoBuf)]
-pub struct DocError {
-    #[pb(index = 1)]
-    pub code: ErrorCode,
-
-    #[pb(index = 2)]
-    pub msg: String,
-}
-
-macro_rules! static_doc_error {
-    ($name:ident, $status:expr) => {
-        #[allow(non_snake_case, missing_docs)]
-        pub fn $name() -> DocError {
-            DocError {
-                code: $status,
-                msg: format!("{}", $status),
-            }
-        }
-    };
-}
-
-impl DocError {
-    fn new(code: ErrorCode, msg: &str) -> Self {
-        Self {
-            code,
-            msg: msg.to_owned(),
-        }
-    }
-
-    pub fn context<T: Debug>(mut self, error: T) -> Self {
-        self.msg = format!("{:?}", error);
-        self
-    }
-
-    pub fn is_record_not_found(&self) -> bool { self.code == ErrorCode::DocNotfound }
-
-    static_doc_error!(ws, ErrorCode::WsConnectError);
-    static_doc_error!(internal, ErrorCode::InternalError);
-    static_doc_error!(unauthorized, ErrorCode::UserUnauthorized);
-    static_doc_error!(doc_not_found, ErrorCode::DocNotfound);
-    static_doc_error!(duplicate_rev, ErrorCode::DuplicateRevision);
-}
-
-pub fn internal_error<T>(e: T) -> DocError
-where
-    T: std::fmt::Debug,
-{
-    DocError::internal().context(e)
-}
-
-#[derive(Debug, Clone, ProtoBuf_Enum, Display, PartialEq, Eq)]
-pub enum ErrorCode {
-    #[display(fmt = "Document websocket error")]
-    WsConnectError    = 0,
-
-    #[display(fmt = "DocNotfound")]
-    DocNotfound       = 1,
-
-    #[display(fmt = "Duplicate revision")]
-    DuplicateRevision = 2,
-
-    #[display(fmt = "UserUnauthorized")]
-    UserUnauthorized  = 10,
-
-    #[display(fmt = "InternalError")]
-    InternalError     = 1000,
-}
-
-impl std::default::Default for ErrorCode {
-    fn default() -> Self { ErrorCode::InternalError }
-}
-
-impl std::convert::From<flowy_database::Error> for DocError {
-    fn from(error: flowy_database::Error) -> Self {
-        match error {
-            flowy_database::Error::NotFound => DocError::doc_not_found().context(error),
-            _ => DocError::internal().context(error),
-        }
-    }
-}
-
-impl std::convert::From<lib_ot::errors::OTError> for DocError {
-    fn from(error: lib_ot::errors::OTError) -> Self { DocError::internal().context(error) }
-}
-
-impl std::convert::From<flowy_collaboration::errors::CollaborateError> for DocError {
-    fn from(error: flowy_collaboration::errors::CollaborateError) -> Self { DocError::internal().context(error) }
-}
-
-impl std::convert::From<std::io::Error> for DocError {
-    fn from(error: std::io::Error) -> Self { DocError::internal().context(error) }
-}
-
-impl std::convert::From<serde_json::Error> for DocError {
-    fn from(error: serde_json::Error) -> Self { DocError::internal().context(error) }
-}
-
-impl std::convert::From<protobuf::ProtobufError> for DocError {
-    fn from(e: protobuf::ProtobufError) -> Self { DocError::internal().context(e) }
-}
-
-impl std::convert::From<backend_service::errors::ServerError> for DocError {
-    fn from(error: ServerError) -> Self {
-        let code = server_error_to_doc_error(error.code);
-        DocError::new(code, &error.msg)
-    }
-}
-
-use backend_service::errors::ErrorCode as ServerErrorCode;
-use std::fmt::Debug;
-
-fn server_error_to_doc_error(code: ServerErrorCode) -> ErrorCode {
-    match code {
-        ServerErrorCode::UserUnauthorized => ErrorCode::UserUnauthorized,
-        ServerErrorCode::RecordNotFound => ErrorCode::DocNotfound,
-        _ => ErrorCode::InternalError,
-    }
-}
-
-impl lib_dispatch::Error for DocError {
-    fn as_response(&self) -> EventResponse {
-        let bytes: Bytes = self.clone().try_into().unwrap();
-        ResponseBuilder::Err().data(bytes).build()
-    }
-}
-
-impl fmt::Display for DocError {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { write!(f, "{:?}: {}", &self.code, &self.msg) }
-}
diff --git a/frontend/rust-lib/flowy-document/src/lib.rs b/frontend/rust-lib/flowy-document/src/lib.rs
index c3ffb87b3d..c176ca4083 100644
--- a/frontend/rust-lib/flowy-document/src/lib.rs
+++ b/frontend/rust-lib/flowy-document/src/lib.rs
@@ -1,4 +1,3 @@
-pub mod errors;
 pub mod module;
 mod notify;
 pub mod protobuf;
@@ -7,3 +6,7 @@ mod sql_tables;
 
 #[macro_use]
 extern crate flowy_database;
+
+pub mod errors {
+    pub use flowy_error::{internal_error, ErrorCode, FlowyError};
+}
diff --git a/frontend/rust-lib/flowy-document/src/module.rs b/frontend/rust-lib/flowy-document/src/module.rs
index adda90094c..b590b5dc43 100644
--- a/frontend/rust-lib/flowy-document/src/module.rs
+++ b/frontend/rust-lib/flowy-document/src/module.rs
@@ -1,5 +1,5 @@
 use crate::{
-    errors::DocError,
+    errors::FlowyError,
     services::{
         doc::{controller::DocController, edit::ClientDocEditor},
         server::construct_doc_server,
@@ -12,10 +12,10 @@ use flowy_database::ConnectionPool;
 use std::sync::Arc;
 
 pub trait DocumentUser: Send + Sync {
-    fn user_dir(&self) -> Result<String, DocError>;
-    fn user_id(&self) -> Result<String, DocError>;
-    fn token(&self) -> Result<String, DocError>;
-    fn db_pool(&self) -> Result<Arc<ConnectionPool>, DocError>;
+    fn user_dir(&self) -> Result<String, FlowyError>;
+    fn user_id(&self) -> Result<String, FlowyError>;
+    fn token(&self) -> Result<String, FlowyError>;
+    fn db_pool(&self) -> Result<Arc<ConnectionPool>, FlowyError>;
 }
 
 pub struct FlowyDocument {
@@ -34,22 +34,22 @@ impl FlowyDocument {
         Self { doc_ctrl, user }
     }
 
-    pub fn init(&self) -> Result<(), DocError> {
+    pub fn init(&self) -> Result<(), FlowyError> {
         let _ = self.doc_ctrl.init()?;
         Ok(())
     }
 
-    pub fn delete(&self, params: DocIdentifier) -> Result<(), DocError> {
+    pub fn delete(&self, params: DocIdentifier) -> Result<(), FlowyError> {
         let _ = self.doc_ctrl.delete(params)?;
         Ok(())
     }
 
-    pub async fn open(&self, params: DocIdentifier) -> Result<Arc<ClientDocEditor>, DocError> {
+    pub async fn open(&self, params: DocIdentifier) -> Result<Arc<ClientDocEditor>, FlowyError> {
         let edit_context = self.doc_ctrl.open(params, self.user.db_pool()?).await?;
         Ok(edit_context)
     }
 
-    pub async fn close(&self, params: DocIdentifier) -> Result<(), DocError> {
+    pub async fn close(&self, params: DocIdentifier) -> Result<(), FlowyError> {
         let _ = self.doc_ctrl.close(&params.doc_id)?;
         Ok(())
     }
@@ -58,13 +58,13 @@ impl FlowyDocument {
         &self,
         params: DocIdentifier,
         pool: Arc<ConnectionPool>,
-    ) -> Result<DocDelta, DocError> {
+    ) -> Result<DocDelta, FlowyError> {
         let edit_context = self.doc_ctrl.open(params, pool).await?;
         let delta = edit_context.delta().await?;
         Ok(delta)
     }
 
-    pub async fn apply_doc_delta(&self, params: DocDelta) -> Result<DocDelta, DocError> {
+    pub async fn apply_doc_delta(&self, params: DocDelta) -> Result<DocDelta, FlowyError> {
         // workaround: compare the rust's delta with flutter's delta. Will be removed
         // very soon
         let doc = self
diff --git a/frontend/rust-lib/flowy-document/src/protobuf/model/errors.rs b/frontend/rust-lib/flowy-document/src/protobuf/model/errors.rs
deleted file mode 100644
index 61831522d9..0000000000
--- a/frontend/rust-lib/flowy-document/src/protobuf/model/errors.rs
+++ /dev/null
@@ -1,312 +0,0 @@
-// This file is generated by rust-protobuf 2.22.1. Do not edit
-// @generated
-
-// https://github.com/rust-lang/rust-clippy/issues/702
-#![allow(unknown_lints)]
-#![allow(clippy::all)]
-
-#![allow(unused_attributes)]
-#![cfg_attr(rustfmt, rustfmt::skip)]
-
-#![allow(box_pointers)]
-#![allow(dead_code)]
-#![allow(missing_docs)]
-#![allow(non_camel_case_types)]
-#![allow(non_snake_case)]
-#![allow(non_upper_case_globals)]
-#![allow(trivial_casts)]
-#![allow(unused_imports)]
-#![allow(unused_results)]
-//! Generated file from `errors.proto`
-
-/// Generated files are compatible only with the same version
-/// of protobuf runtime.
-// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_22_1;
-
-#[derive(PartialEq,Clone,Default)]
-pub struct DocError {
-    // message fields
-    pub code: ErrorCode,
-    pub msg: ::std::string::String,
-    // special fields
-    pub unknown_fields: ::protobuf::UnknownFields,
-    pub cached_size: ::protobuf::CachedSize,
-}
-
-impl<'a> ::std::default::Default for &'a DocError {
-    fn default() -> &'a DocError {
-        <DocError as ::protobuf::Message>::default_instance()
-    }
-}
-
-impl DocError {
-    pub fn new() -> DocError {
-        ::std::default::Default::default()
-    }
-
-    // .ErrorCode code = 1;
-
-
-    pub fn get_code(&self) -> ErrorCode {
-        self.code
-    }
-    pub fn clear_code(&mut self) {
-        self.code = ErrorCode::WsConnectError;
-    }
-
-    // Param is passed by value, moved
-    pub fn set_code(&mut self, v: ErrorCode) {
-        self.code = v;
-    }
-
-    // string msg = 2;
-
-
-    pub fn get_msg(&self) -> &str {
-        &self.msg
-    }
-    pub fn clear_msg(&mut self) {
-        self.msg.clear();
-    }
-
-    // Param is passed by value, moved
-    pub fn set_msg(&mut self, v: ::std::string::String) {
-        self.msg = v;
-    }
-
-    // Mutable pointer to the field.
-    // If field is not initialized, it is initialized with default value first.
-    pub fn mut_msg(&mut self) -> &mut ::std::string::String {
-        &mut self.msg
-    }
-
-    // Take field
-    pub fn take_msg(&mut self) -> ::std::string::String {
-        ::std::mem::replace(&mut self.msg, ::std::string::String::new())
-    }
-}
-
-impl ::protobuf::Message for DocError {
-    fn is_initialized(&self) -> bool {
-        true
-    }
-
-    fn merge_from(&mut self, is: &mut ::protobuf::CodedInputStream<'_>) -> ::protobuf::ProtobufResult<()> {
-        while !is.eof()? {
-            let (field_number, wire_type) = is.read_tag_unpack()?;
-            match field_number {
-                1 => {
-                    ::protobuf::rt::read_proto3_enum_with_unknown_fields_into(wire_type, is, &mut self.code, 1, &mut self.unknown_fields)?
-                },
-                2 => {
-                    ::protobuf::rt::read_singular_proto3_string_into(wire_type, is, &mut self.msg)?;
-                },
-                _ => {
-                    ::protobuf::rt::read_unknown_or_skip_group(field_number, wire_type, is, self.mut_unknown_fields())?;
-                },
-            };
-        }
-        ::std::result::Result::Ok(())
-    }
-
-    // Compute sizes of nested messages
-    #[allow(unused_variables)]
-    fn compute_size(&self) -> u32 {
-        let mut my_size = 0;
-        if self.code != ErrorCode::WsConnectError {
-            my_size += ::protobuf::rt::enum_size(1, self.code);
-        }
-        if !self.msg.is_empty() {
-            my_size += ::protobuf::rt::string_size(2, &self.msg);
-        }
-        my_size += ::protobuf::rt::unknown_fields_size(self.get_unknown_fields());
-        self.cached_size.set(my_size);
-        my_size
-    }
-
-    fn write_to_with_cached_sizes(&self, os: &mut ::protobuf::CodedOutputStream<'_>) -> ::protobuf::ProtobufResult<()> {
-        if self.code != ErrorCode::WsConnectError {
-            os.write_enum(1, ::protobuf::ProtobufEnum::value(&self.code))?;
-        }
-        if !self.msg.is_empty() {
-            os.write_string(2, &self.msg)?;
-        }
-        os.write_unknown_fields(self.get_unknown_fields())?;
-        ::std::result::Result::Ok(())
-    }
-
-    fn get_cached_size(&self) -> u32 {
-        self.cached_size.get()
-    }
-
-    fn get_unknown_fields(&self) -> &::protobuf::UnknownFields {
-        &self.unknown_fields
-    }
-
-    fn mut_unknown_fields(&mut self) -> &mut ::protobuf::UnknownFields {
-        &mut self.unknown_fields
-    }
-
-    fn as_any(&self) -> &dyn (::std::any::Any) {
-        self as &dyn (::std::any::Any)
-    }
-    fn as_any_mut(&mut self) -> &mut dyn (::std::any::Any) {
-        self as &mut dyn (::std::any::Any)
-    }
-    fn into_any(self: ::std::boxed::Box<Self>) -> ::std::boxed::Box<dyn (::std::any::Any)> {
-        self
-    }
-
-    fn descriptor(&self) -> &'static ::protobuf::reflect::MessageDescriptor {
-        Self::descriptor_static()
-    }
-
-    fn new() -> DocError {
-        DocError::new()
-    }
-
-    fn descriptor_static() -> &'static ::protobuf::reflect::MessageDescriptor {
-        static descriptor: ::protobuf::rt::LazyV2<::protobuf::reflect::MessageDescriptor> = ::protobuf::rt::LazyV2::INIT;
-        descriptor.get(|| {
-            let mut fields = ::std::vec::Vec::new();
-            fields.push(::protobuf::reflect::accessor::make_simple_field_accessor::<_, ::protobuf::types::ProtobufTypeEnum<ErrorCode>>(
-                "code",
-                |m: &DocError| { &m.code },
-                |m: &mut DocError| { &mut m.code },
-            ));
-            fields.push(::protobuf::reflect::accessor::make_simple_field_accessor::<_, ::protobuf::types::ProtobufTypeString>(
-                "msg",
-                |m: &DocError| { &m.msg },
-                |m: &mut DocError| { &mut m.msg },
-            ));
-            ::protobuf::reflect::MessageDescriptor::new_pb_name::<DocError>(
-                "DocError",
-                fields,
-                file_descriptor_proto()
-            )
-        })
-    }
-
-    fn default_instance() -> &'static DocError {
-        static instance: ::protobuf::rt::LazyV2<DocError> = ::protobuf::rt::LazyV2::INIT;
-        instance.get(DocError::new)
-    }
-}
-
-impl ::protobuf::Clear for DocError {
-    fn clear(&mut self) {
-        self.code = ErrorCode::WsConnectError;
-        self.msg.clear();
-        self.unknown_fields.clear();
-    }
-}
-
-impl ::std::fmt::Debug for DocError {
-    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
-        ::protobuf::text_format::fmt(self, f)
-    }
-}
-
-impl ::protobuf::reflect::ProtobufValue for DocError {
-    fn as_ref(&self) -> ::protobuf::reflect::ReflectValueRef {
-        ::protobuf::reflect::ReflectValueRef::Message(self)
-    }
-}
-
-#[derive(Clone,PartialEq,Eq,Debug,Hash)]
-pub enum ErrorCode {
-    WsConnectError = 0,
-    DocNotfound = 1,
-    DuplicateRevision = 2,
-    UserUnauthorized = 10,
-    InternalError = 1000,
-}
-
-impl ::protobuf::ProtobufEnum for ErrorCode {
-    fn value(&self) -> i32 {
-        *self as i32
-    }
-
-    fn from_i32(value: i32) -> ::std::option::Option<ErrorCode> {
-        match value {
-            0 => ::std::option::Option::Some(ErrorCode::WsConnectError),
-            1 => ::std::option::Option::Some(ErrorCode::DocNotfound),
-            2 => ::std::option::Option::Some(ErrorCode::DuplicateRevision),
-            10 => ::std::option::Option::Some(ErrorCode::UserUnauthorized),
-            1000 => ::std::option::Option::Some(ErrorCode::InternalError),
-            _ => ::std::option::Option::None
-        }
-    }
-
-    fn values() -> &'static [Self] {
-        static values: &'static [ErrorCode] = &[
-            ErrorCode::WsConnectError,
-            ErrorCode::DocNotfound,
-            ErrorCode::DuplicateRevision,
-            ErrorCode::UserUnauthorized,
-            ErrorCode::InternalError,
-        ];
-        values
-    }
-
-    fn enum_descriptor_static() -> &'static ::protobuf::reflect::EnumDescriptor {
-        static descriptor: ::protobuf::rt::LazyV2<::protobuf::reflect::EnumDescriptor> = ::protobuf::rt::LazyV2::INIT;
-        descriptor.get(|| {
-            ::protobuf::reflect::EnumDescriptor::new_pb_name::<ErrorCode>("ErrorCode", file_descriptor_proto())
-        })
-    }
-}
-
-impl ::std::marker::Copy for ErrorCode {
-}
-
-impl ::std::default::Default for ErrorCode {
-    fn default() -> Self {
-        ErrorCode::WsConnectError
-    }
-}
-
-impl ::protobuf::reflect::ProtobufValue for ErrorCode {
-    fn as_ref(&self) -> ::protobuf::reflect::ReflectValueRef {
-        ::protobuf::reflect::ReflectValueRef::Enum(::protobuf::ProtobufEnum::descriptor(self))
-    }
-}
-
-static file_descriptor_proto_data: &'static [u8] = b"\
-    \n\x0cerrors.proto\"<\n\x08DocError\x12\x1e\n\x04code\x18\x01\x20\x01(\
-    \x0e2\n.ErrorCodeR\x04code\x12\x10\n\x03msg\x18\x02\x20\x01(\tR\x03msg*q\
-    \n\tErrorCode\x12\x12\n\x0eWsConnectError\x10\0\x12\x0f\n\x0bDocNotfound\
-    \x10\x01\x12\x15\n\x11DuplicateRevision\x10\x02\x12\x14\n\x10UserUnautho\
-    rized\x10\n\x12\x12\n\rInternalError\x10\xe8\x07J\xfd\x02\n\x06\x12\x04\
-    \0\0\x0c\x01\n\x08\n\x01\x0c\x12\x03\0\0\x12\n\n\n\x02\x04\0\x12\x04\x02\
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-    \0\x12\x03\x03\x04\x17\n\x0c\n\x05\x04\0\x02\0\x06\x12\x03\x03\x04\r\n\
-    \x0c\n\x05\x04\0\x02\0\x01\x12\x03\x03\x0e\x12\n\x0c\n\x05\x04\0\x02\0\
-    \x03\x12\x03\x03\x15\x16\n\x0b\n\x04\x04\0\x02\x01\x12\x03\x04\x04\x13\n\
-    \x0c\n\x05\x04\0\x02\x01\x05\x12\x03\x04\x04\n\n\x0c\n\x05\x04\0\x02\x01\
-    \x01\x12\x03\x04\x0b\x0e\n\x0c\n\x05\x04\0\x02\x01\x03\x12\x03\x04\x11\
-    \x12\n\n\n\x02\x05\0\x12\x04\x06\0\x0c\x01\n\n\n\x03\x05\0\x01\x12\x03\
-    \x06\x05\x0e\n\x0b\n\x04\x05\0\x02\0\x12\x03\x07\x04\x17\n\x0c\n\x05\x05\
-    \0\x02\0\x01\x12\x03\x07\x04\x12\n\x0c\n\x05\x05\0\x02\0\x02\x12\x03\x07\
-    \x15\x16\n\x0b\n\x04\x05\0\x02\x01\x12\x03\x08\x04\x14\n\x0c\n\x05\x05\0\
-    \x02\x01\x01\x12\x03\x08\x04\x0f\n\x0c\n\x05\x05\0\x02\x01\x02\x12\x03\
-    \x08\x12\x13\n\x0b\n\x04\x05\0\x02\x02\x12\x03\t\x04\x1a\n\x0c\n\x05\x05\
-    \0\x02\x02\x01\x12\x03\t\x04\x15\n\x0c\n\x05\x05\0\x02\x02\x02\x12\x03\t\
-    \x18\x19\n\x0b\n\x04\x05\0\x02\x03\x12\x03\n\x04\x1a\n\x0c\n\x05\x05\0\
-    \x02\x03\x01\x12\x03\n\x04\x14\n\x0c\n\x05\x05\0\x02\x03\x02\x12\x03\n\
-    \x17\x19\n\x0b\n\x04\x05\0\x02\x04\x12\x03\x0b\x04\x19\n\x0c\n\x05\x05\0\
-    \x02\x04\x01\x12\x03\x0b\x04\x11\n\x0c\n\x05\x05\0\x02\x04\x02\x12\x03\
-    \x0b\x14\x18b\x06proto3\
-";
-
-static file_descriptor_proto_lazy: ::protobuf::rt::LazyV2<::protobuf::descriptor::FileDescriptorProto> = ::protobuf::rt::LazyV2::INIT;
-
-fn parse_descriptor_proto() -> ::protobuf::descriptor::FileDescriptorProto {
-    ::protobuf::Message::parse_from_bytes(file_descriptor_proto_data).unwrap()
-}
-
-pub fn file_descriptor_proto() -> &'static ::protobuf::descriptor::FileDescriptorProto {
-    file_descriptor_proto_lazy.get(|| {
-        parse_descriptor_proto()
-    })
-}
diff --git a/frontend/rust-lib/flowy-document/src/protobuf/model/mod.rs b/frontend/rust-lib/flowy-document/src/protobuf/model/mod.rs
index 2145302222..08899a0b2d 100644
--- a/frontend/rust-lib/flowy-document/src/protobuf/model/mod.rs
+++ b/frontend/rust-lib/flowy-document/src/protobuf/model/mod.rs
@@ -3,6 +3,3 @@
 
 mod observable;
 pub use observable::*;
-
-mod errors;
-pub use errors::*;
diff --git a/frontend/rust-lib/flowy-document/src/protobuf/proto/errors.proto b/frontend/rust-lib/flowy-document/src/protobuf/proto/errors.proto
deleted file mode 100644
index b2bbb6dd62..0000000000
--- a/frontend/rust-lib/flowy-document/src/protobuf/proto/errors.proto
+++ /dev/null
@@ -1,13 +0,0 @@
-syntax = "proto3";
-
-message DocError {
-    ErrorCode code = 1;
-    string msg = 2;
-}
-enum ErrorCode {
-    WsConnectError = 0;
-    DocNotfound = 1;
-    DuplicateRevision = 2;
-    UserUnauthorized = 10;
-    InternalError = 1000;
-}
diff --git a/frontend/rust-lib/flowy-document/src/services/doc/controller.rs b/frontend/rust-lib/flowy-document/src/services/doc/controller.rs
index cab76400b4..0185af24af 100644
--- a/frontend/rust-lib/flowy-document/src/services/doc/controller.rs
+++ b/frontend/rust-lib/flowy-document/src/services/doc/controller.rs
@@ -1,5 +1,5 @@
 use crate::{
-    errors::{DocError, DocResult},
+    errors::FlowyError,
     module::DocumentUser,
     services::{
         doc::{
@@ -14,6 +14,7 @@ use bytes::Bytes;
 use dashmap::DashMap;
 use flowy_collaboration::entities::doc::{Doc, DocDelta, DocIdentifier};
 use flowy_database::ConnectionPool;
+use flowy_error::FlowyResult;
 use lib_infra::future::FutureResult;
 use std::sync::Arc;
 
@@ -35,7 +36,7 @@ impl DocController {
         }
     }
 
-    pub(crate) fn init(&self) -> DocResult<()> {
+    pub(crate) fn init(&self) -> FlowyResult<()> {
         self.ws_manager.init();
         Ok(())
     }
@@ -44,7 +45,7 @@ impl DocController {
         &self,
         params: DocIdentifier,
         pool: Arc<ConnectionPool>,
-    ) -> Result<Arc<ClientDocEditor>, DocError> {
+    ) -> Result<Arc<ClientDocEditor>, FlowyError> {
         if !self.open_cache.contains(&params.doc_id) {
             let edit_ctx = self.make_edit_context(&params.doc_id, pool.clone()).await?;
             return Ok(edit_ctx);
@@ -54,7 +55,7 @@ impl DocController {
         Ok(edit_doc_ctx)
     }
 
-    pub(crate) fn close(&self, doc_id: &str) -> Result<(), DocError> {
+    pub(crate) fn close(&self, doc_id: &str) -> Result<(), FlowyError> {
         tracing::debug!("Close doc {}", doc_id);
         self.open_cache.remove(doc_id);
         self.ws_manager.remove_handler(doc_id);
@@ -62,7 +63,7 @@ impl DocController {
     }
 
     #[tracing::instrument(level = "debug", skip(self), err)]
-    pub(crate) fn delete(&self, params: DocIdentifier) -> Result<(), DocError> {
+    pub(crate) fn delete(&self, params: DocIdentifier) -> Result<(), FlowyError> {
         let doc_id = &params.doc_id;
         self.open_cache.remove(doc_id);
         self.ws_manager.remove_handler(doc_id);
@@ -78,7 +79,7 @@ impl DocController {
         &self,
         delta: DocDelta,
         db_pool: Arc<ConnectionPool>,
-    ) -> Result<DocDelta, DocError> {
+    ) -> Result<DocDelta, FlowyError> {
         if !self.open_cache.contains(&delta.doc_id) {
             let doc_identifier: DocIdentifier = delta.doc_id.clone().into();
             let _ = self.open(doc_identifier, db_pool).await?;
@@ -95,7 +96,7 @@ impl DocController {
         &self,
         doc_id: &str,
         pool: Arc<ConnectionPool>,
-    ) -> Result<Arc<ClientDocEditor>, DocError> {
+    ) -> Result<Arc<ClientDocEditor>, FlowyError> {
         let user = self.user.clone();
         let rev_manager = self.make_rev_manager(doc_id, pool.clone())?;
         let edit_ctx = ClientDocEditor::new(doc_id, user, pool, rev_manager, self.ws_manager.ws()).await?;
@@ -105,7 +106,7 @@ impl DocController {
         Ok(edit_ctx)
     }
 
-    fn make_rev_manager(&self, doc_id: &str, pool: Arc<ConnectionPool>) -> Result<RevisionManager, DocError> {
+    fn make_rev_manager(&self, doc_id: &str, pool: Arc<ConnectionPool>) -> Result<RevisionManager, FlowyError> {
         // Opti: require upgradable_read lock and then upgrade to write lock using
         // RwLockUpgradableReadGuard::upgrade(xx) of ws
         // let doc = self.read_doc(doc_id, pool.clone()).await?;
@@ -128,7 +129,7 @@ struct RevisionServerImpl {
 
 impl RevisionServer for RevisionServerImpl {
     #[tracing::instrument(level = "debug", skip(self))]
-    fn fetch_document(&self, doc_id: &str) -> FutureResult<Doc, DocError> {
+    fn fetch_document(&self, doc_id: &str) -> FutureResult<Doc, FlowyError> {
         let params = DocIdentifier {
             doc_id: doc_id.to_string(),
         };
@@ -137,7 +138,7 @@ impl RevisionServer for RevisionServerImpl {
 
         FutureResult::new(async move {
             match server.read_doc(&token, params).await? {
-                None => Err(DocError::doc_not_found().context("Remote doesn't have this document")),
+                None => Err(FlowyError::record_not_found().context("Remote doesn't have this document")),
                 Some(doc) => Ok(doc),
             }
         })
@@ -161,7 +162,7 @@ impl OpenDocCache {
 
     pub(crate) fn contains(&self, doc_id: &str) -> bool { self.inner.get(doc_id).is_some() }
 
-    pub(crate) fn get(&self, doc_id: &str) -> Result<Arc<ClientDocEditor>, DocError> {
+    pub(crate) fn get(&self, doc_id: &str) -> Result<Arc<ClientDocEditor>, FlowyError> {
         if !self.contains(&doc_id) {
             return Err(doc_not_found());
         }
@@ -179,4 +180,6 @@ impl OpenDocCache {
     }
 }
 
-fn doc_not_found() -> DocError { DocError::doc_not_found().context("Doc is close or you should call open first") }
+fn doc_not_found() -> FlowyError {
+    FlowyError::record_not_found().context("Doc is close or you should call open first")
+}
diff --git a/frontend/rust-lib/flowy-document/src/services/doc/edit/editor.rs b/frontend/rust-lib/flowy-document/src/services/doc/edit/editor.rs
index f60a7d5e86..673c637c25 100644
--- a/frontend/rust-lib/flowy-document/src/services/doc/edit/editor.rs
+++ b/frontend/rust-lib/flowy-document/src/services/doc/edit/editor.rs
@@ -1,5 +1,5 @@
 use crate::{
-    errors::{internal_error, DocError, DocResult},
+    errors::FlowyError,
     module::DocumentUser,
     services::{
         doc::{
@@ -16,6 +16,7 @@ use flowy_collaboration::{
     errors::CollaborateResult,
 };
 use flowy_database::ConnectionPool;
+use flowy_error::{internal_error, FlowyResult};
 use lib_infra::retry::{ExponentialBackoff, Retry};
 use lib_ot::{
     core::Interval,
@@ -45,7 +46,7 @@ impl ClientDocEditor {
         pool: Arc<ConnectionPool>,
         mut rev_manager: RevisionManager,
         ws_sender: Arc<dyn DocumentWebSocket>,
-    ) -> DocResult<Arc<Self>> {
+    ) -> FlowyResult<Arc<Self>> {
         let delta = rev_manager.load_document().await?;
         let edit_cmd_tx = spawn_edit_queue(doc_id, delta, pool.clone());
         let doc_id = doc_id.to_string();
@@ -69,7 +70,7 @@ impl ClientDocEditor {
         Ok(edit_doc)
     }
 
-    pub async fn insert<T: ToString>(&self, index: usize, data: T) -> Result<(), DocError> {
+    pub async fn insert<T: ToString>(&self, index: usize, data: T) -> Result<(), FlowyError> {
         let (ret, rx) = oneshot::channel::<CollaborateResult<RichTextDelta>>();
         let msg = EditCommand::Insert {
             index,
@@ -82,7 +83,7 @@ impl ClientDocEditor {
         Ok(())
     }
 
-    pub async fn delete(&self, interval: Interval) -> Result<(), DocError> {
+    pub async fn delete(&self, interval: Interval) -> Result<(), FlowyError> {
         let (ret, rx) = oneshot::channel::<CollaborateResult<RichTextDelta>>();
         let msg = EditCommand::Delete { interval, ret };
         let _ = self.edit_cmd_tx.send(msg);
@@ -91,7 +92,7 @@ impl ClientDocEditor {
         Ok(())
     }
 
-    pub async fn format(&self, interval: Interval, attribute: RichTextAttribute) -> Result<(), DocError> {
+    pub async fn format(&self, interval: Interval, attribute: RichTextAttribute) -> Result<(), FlowyError> {
         let (ret, rx) = oneshot::channel::<CollaborateResult<RichTextDelta>>();
         let msg = EditCommand::Format {
             interval,
@@ -104,7 +105,7 @@ impl ClientDocEditor {
         Ok(())
     }
 
-    pub async fn replace<T: ToString>(&self, interval: Interval, data: T) -> Result<(), DocError> {
+    pub async fn replace<T: ToString>(&self, interval: Interval, data: T) -> Result<(), FlowyError> {
         let (ret, rx) = oneshot::channel::<CollaborateResult<RichTextDelta>>();
         let msg = EditCommand::Replace {
             interval,
@@ -131,7 +132,7 @@ impl ClientDocEditor {
         rx.await.unwrap_or(false)
     }
 
-    pub async fn undo(&self) -> Result<UndoResult, DocError> {
+    pub async fn undo(&self) -> Result<UndoResult, FlowyError> {
         let (ret, rx) = oneshot::channel::<CollaborateResult<UndoResult>>();
         let msg = EditCommand::Undo { ret };
         let _ = self.edit_cmd_tx.send(msg);
@@ -139,7 +140,7 @@ impl ClientDocEditor {
         Ok(r)
     }
 
-    pub async fn redo(&self) -> Result<UndoResult, DocError> {
+    pub async fn redo(&self) -> Result<UndoResult, FlowyError> {
         let (ret, rx) = oneshot::channel::<CollaborateResult<UndoResult>>();
         let msg = EditCommand::Redo { ret };
         let _ = self.edit_cmd_tx.send(msg);
@@ -147,7 +148,7 @@ impl ClientDocEditor {
         Ok(r)
     }
 
-    pub async fn delta(&self) -> DocResult<DocDelta> {
+    pub async fn delta(&self) -> FlowyResult<DocDelta> {
         let (ret, rx) = oneshot::channel::<CollaborateResult<String>>();
         let msg = EditCommand::ReadDoc { ret };
         let _ = self.edit_cmd_tx.send(msg);
@@ -159,7 +160,7 @@ impl ClientDocEditor {
         })
     }
 
-    async fn save_local_delta(&self, delta: RichTextDelta) -> Result<RevId, DocError> {
+    async fn save_local_delta(&self, delta: RichTextDelta) -> Result<RevId, FlowyError> {
         let delta_data = delta.to_bytes();
         let (base_rev_id, rev_id) = self.rev_manager.next_rev_id();
         let delta_data = delta_data.to_vec();
@@ -170,7 +171,7 @@ impl ClientDocEditor {
     }
 
     #[tracing::instrument(level = "debug", skip(self, data), err)]
-    pub(crate) async fn composing_local_delta(&self, data: Bytes) -> Result<(), DocError> {
+    pub(crate) async fn composing_local_delta(&self, data: Bytes) -> Result<(), FlowyError> {
         let delta = RichTextDelta::from_bytes(&data)?;
         let (ret, rx) = oneshot::channel::<CollaborateResult<()>>();
         let msg = EditCommand::ComposeDelta {
@@ -207,7 +208,7 @@ impl ClientDocEditor {
     }
 
     #[tracing::instrument(level = "debug", skip(self))]
-    pub(crate) async fn handle_push_rev(&self, bytes: Bytes) -> DocResult<()> {
+    pub(crate) async fn handle_push_rev(&self, bytes: Bytes) -> FlowyResult<()> {
         // Transform the revision
         let (ret, rx) = oneshot::channel::<CollaborateResult<TransformDeltas>>();
         let _ = self.edit_cmd_tx.send(EditCommand::ProcessRemoteRevision { bytes, ret });
@@ -262,7 +263,7 @@ impl ClientDocEditor {
         Ok(())
     }
 
-    pub async fn handle_ws_message(&self, doc_data: WsDocumentData) -> DocResult<()> {
+    pub async fn handle_ws_message(&self, doc_data: WsDocumentData) -> FlowyResult<()> {
         match self.ws_msg_tx.send(doc_data) {
             Ok(_) => {},
             Err(e) => tracing::error!("❌Propagate ws message failed. {}", e),
@@ -323,7 +324,7 @@ fn start_sync(
 
 #[cfg(feature = "flowy_unit_test")]
 impl ClientDocEditor {
-    pub async fn doc_json(&self) -> DocResult<String> {
+    pub async fn doc_json(&self) -> FlowyResult<String> {
         let (ret, rx) = oneshot::channel::<CollaborateResult<String>>();
         let msg = EditCommand::ReadDoc { ret };
         let _ = self.edit_cmd_tx.send(msg);
@@ -331,7 +332,7 @@ impl ClientDocEditor {
         Ok(s)
     }
 
-    pub async fn doc_delta(&self) -> DocResult<RichTextDelta> {
+    pub async fn doc_delta(&self) -> FlowyResult<RichTextDelta> {
         let (ret, rx) = oneshot::channel::<CollaborateResult<RichTextDelta>>();
         let msg = EditCommand::ReadDocDelta { ret };
         let _ = self.edit_cmd_tx.send(msg);
diff --git a/frontend/rust-lib/flowy-document/src/services/doc/edit/model.rs b/frontend/rust-lib/flowy-document/src/services/doc/edit/model.rs
index c2454c267e..71a6bb195a 100644
--- a/frontend/rust-lib/flowy-document/src/services/doc/edit/model.rs
+++ b/frontend/rust-lib/flowy-document/src/services/doc/edit/model.rs
@@ -1,6 +1,6 @@
 #![allow(clippy::all)]
 #![cfg_attr(rustfmt, rustfmt::skip)]
-use crate::{errors::DocError, services::ws::DocumentWebSocket};
+use crate::{errors::FlowyError, services::ws::DocumentWebSocket};
 
 use futures::future::BoxFuture;
 use lib_infra::retry::Action;
@@ -29,7 +29,7 @@ impl OpenDocAction {
 impl Action for OpenDocAction {
     type Future = BoxFuture<'static, Result<Self::Item, Self::Error>>;
     type Item = ();
-    type Error = DocError;
+    type Error = FlowyError;
 
     fn run(&mut self) -> Self::Future {
         // let new_doc_user = NewDocUser {
@@ -42,6 +42,6 @@ impl Action for OpenDocAction {
         //     Ok(_) => Box::pin(future::ready(Ok::<(), DocError>(()))),
         //     Err(e) => Box::pin(future::ready(Err::<(), DocError>(e))),
         // }
-        Box::pin(future::ready(Ok::<(), DocError>(())))
+        Box::pin(future::ready(Ok::<(), FlowyError>(())))
     }
 }
diff --git a/frontend/rust-lib/flowy-document/src/services/doc/revision/cache/cache.rs b/frontend/rust-lib/flowy-document/src/services/doc/revision/cache/cache.rs
index 2eaeb75f63..e4d8bbbe48 100644
--- a/frontend/rust-lib/flowy-document/src/services/doc/revision/cache/cache.rs
+++ b/frontend/rust-lib/flowy-document/src/services/doc/revision/cache/cache.rs
@@ -1,5 +1,5 @@
 use crate::{
-    errors::{internal_error, DocError, DocResult},
+    errors::FlowyError,
     services::doc::revision::{
         cache::{disk::RevisionDiskCache, memory::RevisionMemoryCache},
         RevisionRecord,
@@ -9,6 +9,7 @@ use crate::{
 };
 use flowy_collaboration::entities::doc::Doc;
 use flowy_database::ConnectionPool;
+use flowy_error::{internal_error, FlowyResult};
 use lib_infra::future::FutureResult;
 use lib_ot::{
     core::{Operation, OperationTransformable},
@@ -22,10 +23,10 @@ use tokio::{
 };
 
 pub trait RevisionIterator: Send + Sync {
-    fn next(&self) -> FutureResult<Option<RevisionRecord>, DocError>;
+    fn next(&self) -> FutureResult<Option<RevisionRecord>, FlowyError>;
 }
 
-type DocRevisionDeskCache = dyn RevisionDiskCache<Error = DocError>;
+type DocRevisionDeskCache = dyn RevisionDiskCache<Error = FlowyError>;
 
 pub struct RevisionCache {
     user_id: String,
@@ -57,9 +58,9 @@ impl RevisionCache {
     }
 
     #[tracing::instrument(level = "debug", skip(self, revision))]
-    pub async fn add_local_revision(&self, revision: Revision) -> DocResult<()> {
+    pub async fn add_local_revision(&self, revision: Revision) -> FlowyResult<()> {
         if self.memory_cache.contains(&revision.rev_id) {
-            return Err(DocError::duplicate_rev().context(format!("Duplicate revision id: {}", revision.rev_id)));
+            return Err(FlowyError::internal().context(format!("Duplicate revision id: {}", revision.rev_id)));
         }
         let record = RevisionRecord {
             revision,
@@ -71,9 +72,9 @@ impl RevisionCache {
     }
 
     #[tracing::instrument(level = "debug", skip(self, revision))]
-    pub async fn add_remote_revision(&self, revision: Revision) -> DocResult<()> {
+    pub async fn add_remote_revision(&self, revision: Revision) -> FlowyResult<()> {
         if self.memory_cache.contains(&revision.rev_id) {
-            return Err(DocError::duplicate_rev().context(format!("Duplicate revision id: {}", revision.rev_id)));
+            return Err(FlowyError::internal().context(format!("Duplicate revision id: {}", revision.rev_id)));
         }
         let record = RevisionRecord {
             revision,
@@ -126,7 +127,7 @@ impl RevisionCache {
         }));
     }
 
-    pub async fn revisions_in_range(&self, range: RevisionRange) -> DocResult<Vec<Revision>> {
+    pub async fn revisions_in_range(&self, range: RevisionRange) -> FlowyResult<Vec<Revision>> {
         let revs = self.memory_cache.revisions_in_range(&range).await?;
         if revs.len() == range.len() as usize {
             Ok(revs)
@@ -145,7 +146,7 @@ impl RevisionCache {
         }
     }
 
-    pub async fn load_document(&self) -> DocResult<Doc> {
+    pub async fn load_document(&self) -> FlowyResult<Doc> {
         // Loading the document from disk and it will be sync with server.
         let result = load_from_disk(&self.doc_id, self.memory_cache.clone(), self.dish_cache.clone()).await;
         if result.is_ok() {
@@ -170,7 +171,7 @@ impl RevisionCache {
 }
 
 impl RevisionIterator for RevisionCache {
-    fn next(&self) -> FutureResult<Option<RevisionRecord>, DocError> {
+    fn next(&self) -> FutureResult<Option<RevisionRecord>, FlowyError> {
         let memory_cache = self.memory_cache.clone();
         let disk_cache = self.dish_cache.clone();
         let doc_id = self.doc_id.clone();
@@ -196,13 +197,13 @@ async fn load_from_disk(
     doc_id: &str,
     memory_cache: Arc<RevisionMemoryCache>,
     disk_cache: Arc<DocRevisionDeskCache>,
-) -> DocResult<Doc> {
+) -> FlowyResult<Doc> {
     let doc_id = doc_id.to_owned();
     let (tx, mut rx) = mpsc::channel(2);
     let doc = spawn_blocking(move || {
         let records = disk_cache.read_revisions(&doc_id)?;
         if records.is_empty() {
-            return Err(DocError::doc_not_found().context("Local doesn't have this document"));
+            return Err(FlowyError::record_not_found().context("Local doesn't have this document"));
         }
 
         let (base_rev_id, rev_id) = records.last().unwrap().revision.pair_rev_id();
@@ -224,7 +225,7 @@ async fn load_from_disk(
         }
 
         correct_delta_if_need(&mut delta);
-        Result::<Doc, DocError>::Ok(Doc {
+        Result::<Doc, FlowyError>::Ok(Doc {
             id: doc_id,
             data: delta.to_json(),
             rev_id,
@@ -261,11 +262,11 @@ pub(crate) struct Persistence {
 }
 
 impl RevisionDiskCache for Persistence {
-    type Error = DocError;
+    type Error = FlowyError;
 
     fn create_revisions(&self, revisions: Vec<RevisionRecord>) -> Result<(), Self::Error> {
         let conn = &*self.pool.get().map_err(internal_error)?;
-        conn.immediate_transaction::<_, DocError, _>(|| {
+        conn.immediate_transaction::<_, FlowyError, _>(|| {
             let _ = RevTableSql::create_rev_table(revisions, conn)?;
             Ok(())
         })
diff --git a/frontend/rust-lib/flowy-document/src/services/doc/revision/manager.rs b/frontend/rust-lib/flowy-document/src/services/doc/revision/manager.rs
index 434badcfd8..0ff47cbc2f 100644
--- a/frontend/rust-lib/flowy-document/src/services/doc/revision/manager.rs
+++ b/frontend/rust-lib/flowy-document/src/services/doc/revision/manager.rs
@@ -1,11 +1,12 @@
 use crate::{
-    errors::{DocError, DocResult},
+    errors::FlowyError,
     services::{
         doc::revision::{RevisionCache, RevisionUpStream, SteamStopRx},
         ws::DocumentWebSocket,
     },
 };
 use flowy_collaboration::{entities::doc::Doc, util::RevIdCounter};
+use flowy_error::FlowyResult;
 use lib_infra::future::FutureResult;
 use lib_ot::{
     core::OperationTransformable,
@@ -15,7 +16,7 @@ use lib_ot::{
 use std::sync::Arc;
 
 pub trait RevisionServer: Send + Sync {
-    fn fetch_document(&self, doc_id: &str) -> FutureResult<Doc, DocError>;
+    fn fetch_document(&self, doc_id: &str) -> FutureResult<Doc, FlowyError>;
 }
 
 pub struct RevisionManager {
@@ -38,23 +39,23 @@ impl RevisionManager {
         }
     }
 
-    pub async fn load_document(&mut self) -> DocResult<RichTextDelta> {
+    pub async fn load_document(&mut self) -> FlowyResult<RichTextDelta> {
         let doc = self.cache.load_document().await?;
         self.update_rev_id_counter_value(doc.rev_id);
         Ok(doc.delta()?)
     }
 
-    pub async fn add_remote_revision(&self, revision: &Revision) -> Result<(), DocError> {
+    pub async fn add_remote_revision(&self, revision: &Revision) -> Result<(), FlowyError> {
         let _ = self.cache.add_remote_revision(revision.clone()).await?;
         Ok(())
     }
 
-    pub async fn add_local_revision(&self, revision: &Revision) -> Result<(), DocError> {
+    pub async fn add_local_revision(&self, revision: &Revision) -> Result<(), FlowyError> {
         let _ = self.cache.add_local_revision(revision.clone()).await?;
         Ok(())
     }
 
-    pub async fn ack_revision(&self, rev_id: RevId) -> Result<(), DocError> {
+    pub async fn ack_revision(&self, rev_id: RevId) -> Result<(), FlowyError> {
         self.cache.ack_revision(rev_id.into()).await;
         Ok(())
     }
@@ -69,7 +70,7 @@ impl RevisionManager {
 
     pub fn update_rev_id_counter_value(&self, rev_id: i64) { self.rev_id_counter.set(rev_id); }
 
-    pub async fn mk_revisions(&self, range: RevisionRange) -> Result<Revision, DocError> {
+    pub async fn mk_revisions(&self, range: RevisionRange) -> Result<Revision, FlowyError> {
         debug_assert!(range.doc_id == self.doc_id);
         let revisions = self.cache.revisions_in_range(range.clone()).await?;
         let mut new_delta = RichTextDelta::new();
diff --git a/frontend/rust-lib/flowy-document/src/services/doc/revision/sync.rs b/frontend/rust-lib/flowy-document/src/services/doc/revision/sync.rs
index 9fccdd2512..f42b8ac28d 100644
--- a/frontend/rust-lib/flowy-document/src/services/doc/revision/sync.rs
+++ b/frontend/rust-lib/flowy-document/src/services/doc/revision/sync.rs
@@ -1,16 +1,14 @@
-use crate::{
-    errors::{internal_error, DocResult},
-    services::{
-        doc::{
-            edit::ClientDocEditor,
-            revision::{RevisionIterator, RevisionManager},
-        },
-        ws::DocumentWebSocket,
+use crate::services::{
+    doc::{
+        edit::ClientDocEditor,
+        revision::{RevisionIterator, RevisionManager},
     },
+    ws::DocumentWebSocket,
 };
 use async_stream::stream;
 use bytes::Bytes;
 use flowy_collaboration::entities::ws::{WsDataType, WsDocumentData};
+use flowy_error::{internal_error, FlowyResult};
 use futures::stream::StreamExt;
 use lib_ot::revision::{RevId, RevisionRange};
 use std::{convert::TryFrom, sync::Arc};
@@ -81,7 +79,7 @@ impl RevisionDownStream {
             .await;
     }
 
-    async fn handle_message(&self, msg: WsDocumentData) -> DocResult<()> {
+    async fn handle_message(&self, msg: WsDocumentData) -> FlowyResult<()> {
         let WsDocumentData { doc_id: _, ty, data } = msg;
         let bytes = spawn_blocking(move || Bytes::from(data))
             .await
@@ -169,13 +167,13 @@ impl RevisionUpStream {
             .await;
     }
 
-    async fn handle_msg(&self, msg: UpStreamMsg) -> DocResult<()> {
+    async fn handle_msg(&self, msg: UpStreamMsg) -> FlowyResult<()> {
         match msg {
             UpStreamMsg::Tick => self.send_next_revision().await,
         }
     }
 
-    async fn send_next_revision(&self) -> DocResult<()> {
+    async fn send_next_revision(&self) -> FlowyResult<()> {
         match self.revisions.next().await? {
             None => Ok(()),
             Some(record) => {
diff --git a/frontend/rust-lib/flowy-document/src/services/server/middleware.rs b/frontend/rust-lib/flowy-document/src/services/server/middleware.rs
index d4875c1c89..38b3c917df 100644
--- a/frontend/rust-lib/flowy-document/src/services/server/middleware.rs
+++ b/frontend/rust-lib/flowy-document/src/services/server/middleware.rs
@@ -17,7 +17,7 @@ impl ResponseMiddleware for DocMiddleware {
                     None => {},
                     Some(_token) => {
                         // let error =
-                        // WorkspaceError::new(ErrorCode::UserUnauthorized, "");
+                        // FlowyError::new(ErrorCode::UserUnauthorized, "");
                         // observable(token,
                         // WorkspaceObservable::UserUnauthorized).error(error).
                         // build()
diff --git a/frontend/rust-lib/flowy-document/src/services/server/mod.rs b/frontend/rust-lib/flowy-document/src/services/server/mod.rs
index 864eed78ac..4f19269cb0 100644
--- a/frontend/rust-lib/flowy-document/src/services/server/mod.rs
+++ b/frontend/rust-lib/flowy-document/src/services/server/mod.rs
@@ -4,7 +4,7 @@ mod server_api_mock;
 
 pub use server_api::*;
 // TODO: ignore mock files in production
-use crate::errors::DocError;
+use crate::errors::FlowyError;
 use backend_service::configuration::ClientServerConfiguration;
 use flowy_collaboration::entities::doc::{CreateDocParams, Doc, DocIdentifier, UpdateDocParams};
 use lib_infra::future::FutureResult;
@@ -13,11 +13,11 @@ use std::sync::Arc;
 
 pub(crate) type Server = Arc<dyn DocumentServerAPI + Send + Sync>;
 pub trait DocumentServerAPI {
-    fn create_doc(&self, token: &str, params: CreateDocParams) -> FutureResult<(), DocError>;
+    fn create_doc(&self, token: &str, params: CreateDocParams) -> FutureResult<(), FlowyError>;
 
-    fn read_doc(&self, token: &str, params: DocIdentifier) -> FutureResult<Option<Doc>, DocError>;
+    fn read_doc(&self, token: &str, params: DocIdentifier) -> FutureResult<Option<Doc>, FlowyError>;
 
-    fn update_doc(&self, token: &str, params: UpdateDocParams) -> FutureResult<(), DocError>;
+    fn update_doc(&self, token: &str, params: UpdateDocParams) -> FutureResult<(), FlowyError>;
 }
 
 pub(crate) fn construct_doc_server(
diff --git a/frontend/rust-lib/flowy-document/src/services/server/server_api.rs b/frontend/rust-lib/flowy-document/src/services/server/server_api.rs
index c5a56aaa5c..c12f0a9662 100644
--- a/frontend/rust-lib/flowy-document/src/services/server/server_api.rs
+++ b/frontend/rust-lib/flowy-document/src/services/server/server_api.rs
@@ -1,4 +1,4 @@
-use crate::{errors::DocError, services::server::DocumentServerAPI};
+use crate::{errors::FlowyError, services::server::DocumentServerAPI};
 use backend_service::{configuration::*, request::HttpRequestBuilder};
 use flowy_collaboration::entities::doc::{CreateDocParams, Doc, DocIdentifier, UpdateDocParams};
 use lib_infra::future::FutureResult;
@@ -12,19 +12,19 @@ impl DocServer {
 }
 
 impl DocumentServerAPI for DocServer {
-    fn create_doc(&self, token: &str, params: CreateDocParams) -> FutureResult<(), DocError> {
+    fn create_doc(&self, token: &str, params: CreateDocParams) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.doc_url();
         FutureResult::new(async move { create_doc_request(&token, params, &url).await })
     }
 
-    fn read_doc(&self, token: &str, params: DocIdentifier) -> FutureResult<Option<Doc>, DocError> {
+    fn read_doc(&self, token: &str, params: DocIdentifier) -> FutureResult<Option<Doc>, FlowyError> {
         let token = token.to_owned();
         let url = self.config.doc_url();
         FutureResult::new(async move { read_doc_request(&token, params, &url).await })
     }
 
-    fn update_doc(&self, token: &str, params: UpdateDocParams) -> FutureResult<(), DocError> {
+    fn update_doc(&self, token: &str, params: UpdateDocParams) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.doc_url();
         FutureResult::new(async move { update_doc_request(&token, params, &url).await })
@@ -35,7 +35,7 @@ pub(crate) fn request_builder() -> HttpRequestBuilder {
     HttpRequestBuilder::new().middleware(super::middleware::MIDDLEWARE.clone())
 }
 
-pub async fn create_doc_request(token: &str, params: CreateDocParams, url: &str) -> Result<(), DocError> {
+pub async fn create_doc_request(token: &str, params: CreateDocParams, url: &str) -> Result<(), FlowyError> {
     let _ = request_builder()
         .post(&url.to_owned())
         .header(HEADER_TOKEN, token)
@@ -45,7 +45,7 @@ pub async fn create_doc_request(token: &str, params: CreateDocParams, url: &str)
     Ok(())
 }
 
-pub async fn read_doc_request(token: &str, params: DocIdentifier, url: &str) -> Result<Option<Doc>, DocError> {
+pub async fn read_doc_request(token: &str, params: DocIdentifier, url: &str) -> Result<Option<Doc>, FlowyError> {
     let doc = request_builder()
         .get(&url.to_owned())
         .header(HEADER_TOKEN, token)
@@ -56,7 +56,7 @@ pub async fn read_doc_request(token: &str, params: DocIdentifier, url: &str) ->
     Ok(doc)
 }
 
-pub async fn update_doc_request(token: &str, params: UpdateDocParams, url: &str) -> Result<(), DocError> {
+pub async fn update_doc_request(token: &str, params: UpdateDocParams, url: &str) -> Result<(), FlowyError> {
     let _ = request_builder()
         .patch(&url.to_owned())
         .header(HEADER_TOKEN, token)
diff --git a/frontend/rust-lib/flowy-document/src/services/server/server_api_mock.rs b/frontend/rust-lib/flowy-document/src/services/server/server_api_mock.rs
index faf728f195..b2bdd3b7ed 100644
--- a/frontend/rust-lib/flowy-document/src/services/server/server_api_mock.rs
+++ b/frontend/rust-lib/flowy-document/src/services/server/server_api_mock.rs
@@ -4,16 +4,16 @@ use flowy_collaboration::{
 };
 use lib_infra::future::FutureResult;
 
-use crate::{errors::DocError, services::server::DocumentServerAPI};
+use crate::{errors::FlowyError, services::server::DocumentServerAPI};
 
 pub struct DocServerMock {}
 
 impl DocumentServerAPI for DocServerMock {
-    fn create_doc(&self, _token: &str, _params: CreateDocParams) -> FutureResult<(), DocError> {
+    fn create_doc(&self, _token: &str, _params: CreateDocParams) -> FutureResult<(), FlowyError> {
         FutureResult::new(async { Ok(()) })
     }
 
-    fn read_doc(&self, _token: &str, params: DocIdentifier) -> FutureResult<Option<Doc>, DocError> {
+    fn read_doc(&self, _token: &str, params: DocIdentifier) -> FutureResult<Option<Doc>, FlowyError> {
         let doc = Doc {
             id: params.doc_id,
             data: initial_string(),
@@ -23,7 +23,7 @@ impl DocumentServerAPI for DocServerMock {
         FutureResult::new(async { Ok(Some(doc)) })
     }
 
-    fn update_doc(&self, _token: &str, _params: UpdateDocParams) -> FutureResult<(), DocError> {
+    fn update_doc(&self, _token: &str, _params: UpdateDocParams) -> FutureResult<(), FlowyError> {
         FutureResult::new(async { Ok(()) })
     }
 }
diff --git a/frontend/rust-lib/flowy-document/src/services/ws/ws_manager.rs b/frontend/rust-lib/flowy-document/src/services/ws/ws_manager.rs
index eb2c8cc0cb..efccc18ece 100644
--- a/frontend/rust-lib/flowy-document/src/services/ws/ws_manager.rs
+++ b/frontend/rust-lib/flowy-document/src/services/ws/ws_manager.rs
@@ -1,4 +1,4 @@
-use crate::errors::DocError;
+use crate::errors::FlowyError;
 use bytes::Bytes;
 use dashmap::DashMap;
 use flowy_collaboration::entities::ws::WsDocumentData;
@@ -12,7 +12,7 @@ pub(crate) trait WsDocumentHandler: Send + Sync {
 
 pub type WsStateReceiver = tokio::sync::broadcast::Receiver<WsConnectState>;
 pub trait DocumentWebSocket: Send + Sync {
-    fn send(&self, data: WsDocumentData) -> Result<(), DocError>;
+    fn send(&self, data: WsDocumentData) -> Result<(), FlowyError>;
     fn subscribe_state_changed(&self) -> WsStateReceiver;
 }
 
diff --git a/frontend/rust-lib/flowy-document/src/sql_tables/doc/rev_sql.rs b/frontend/rust-lib/flowy-document/src/sql_tables/doc/rev_sql.rs
index 61077c26fd..80a9f106bf 100644
--- a/frontend/rust-lib/flowy-document/src/sql_tables/doc/rev_sql.rs
+++ b/frontend/rust-lib/flowy-document/src/sql_tables/doc/rev_sql.rs
@@ -1,5 +1,5 @@
 use crate::{
-    errors::DocError,
+    errors::FlowyError,
     services::doc::revision::RevisionRecord,
     sql_tables::{doc::RevTable, mk_revision_record_from_table, RevChangeset, RevTableState, RevTableType},
 };
@@ -10,7 +10,7 @@ use lib_ot::revision::RevisionRange;
 pub struct RevTableSql {}
 
 impl RevTableSql {
-    pub(crate) fn create_rev_table(revisions: Vec<RevisionRecord>, conn: &SqliteConnection) -> Result<(), DocError> {
+    pub(crate) fn create_rev_table(revisions: Vec<RevisionRecord>, conn: &SqliteConnection) -> Result<(), FlowyError> {
         // Batch insert: https://diesel.rs/guides/all-about-inserts.html
         let records = revisions
             .into_iter()
@@ -33,7 +33,7 @@ impl RevTableSql {
     }
 
     #[allow(dead_code)]
-    pub(crate) fn update_rev_table(changeset: RevChangeset, conn: &SqliteConnection) -> Result<(), DocError> {
+    pub(crate) fn update_rev_table(changeset: RevChangeset, conn: &SqliteConnection) -> Result<(), FlowyError> {
         let filter = dsl::rev_table
             .filter(dsl::rev_id.eq(changeset.rev_id.as_ref()))
             .filter(dsl::doc_id.eq(changeset.doc_id));
@@ -46,7 +46,7 @@ impl RevTableSql {
         user_id: &str,
         doc_id: &str,
         conn: &SqliteConnection,
-    ) -> Result<Vec<RevisionRecord>, DocError> {
+    ) -> Result<Vec<RevisionRecord>, FlowyError> {
         let filter = dsl::rev_table
             .filter(dsl::doc_id.eq(doc_id))
             .order(dsl::rev_id.asc())
@@ -64,7 +64,7 @@ impl RevTableSql {
         doc_id: &str,
         revision_id: &i64,
         conn: &SqliteConnection,
-    ) -> Result<Option<RevisionRecord>, DocError> {
+    ) -> Result<Option<RevisionRecord>, FlowyError> {
         let filter = dsl::rev_table
             .filter(dsl::doc_id.eq(doc_id))
             .filter(dsl::rev_id.eq(revision_id));
@@ -82,7 +82,7 @@ impl RevTableSql {
         doc_id: &str,
         range: RevisionRange,
         conn: &SqliteConnection,
-    ) -> Result<Vec<RevisionRecord>, DocError> {
+    ) -> Result<Vec<RevisionRecord>, FlowyError> {
         let rev_tables = dsl::rev_table
             .filter(dsl::rev_id.ge(range.start))
             .filter(dsl::rev_id.le(range.end))
@@ -98,7 +98,7 @@ impl RevTableSql {
     }
 
     #[allow(dead_code)]
-    pub(crate) fn delete_rev_table(doc_id_s: &str, rev_id_s: i64, conn: &SqliteConnection) -> Result<(), DocError> {
+    pub(crate) fn delete_rev_table(doc_id_s: &str, rev_id_s: i64, conn: &SqliteConnection) -> Result<(), FlowyError> {
         let filter = dsl::rev_table
             .filter(dsl::rev_id.eq(rev_id_s))
             .filter(dsl::doc_id.eq(doc_id_s));
diff --git a/frontend/rust-lib/flowy-error/Cargo.toml b/frontend/rust-lib/flowy-error/Cargo.toml
index b738a43422..5ec55b475e 100644
--- a/frontend/rust-lib/flowy-error/Cargo.toml
+++ b/frontend/rust-lib/flowy-error/Cargo.toml
@@ -7,7 +7,23 @@ edition = "2018"
 
 [dependencies]
 flowy-derive = { path = "../../../shared-lib/flowy-derive" }
-derive_more = {version = "0.99", features = ["display"]}
+error-code = { path = "../../../shared-lib/error-code" }
 lib-dispatch = { path = "../lib-dispatch" }
 protobuf = {version = "2.20.0"}
-bytes = "1.0"
\ No newline at end of file
+bytes = "1.0"
+
+
+flowy-collaboration = { path = "../../../shared-lib/flowy-collaboration", optional = true}
+lib-ot = { path = "../../../shared-lib/lib-ot", optional = true}
+serde_json = {version = "1.0", optional = true}
+backend-service = { path = "../../../shared-lib/backend-service", optional = true}
+flowy-database = { path = "../flowy-database", optional = true}
+lib-sqlite = { path = "../../../shared-lib/lib-sqlite", optional = true}
+r2d2 = { version = "0.8", optional = true}
+
+[features]
+collaboration = ["flowy-collaboration"]
+ot = ["lib-ot"]
+serde = ["serde_json"]
+backend = ["backend-service"]
+db = ["flowy-database", "lib-sqlite", "r2d2"]
diff --git a/frontend/rust-lib/flowy-error/src/errors.rs b/frontend/rust-lib/flowy-error/src/errors.rs
index e79b08bee8..c8459b9d4e 100644
--- a/frontend/rust-lib/flowy-error/src/errors.rs
+++ b/frontend/rust-lib/flowy-error/src/errors.rs
@@ -1,13 +1,10 @@
-use crate::protobuf::ErrorCode as ProtoBufErrorCode;
 use bytes::Bytes;
-use derive_more::Display;
-use flowy_derive::{ProtoBuf, ProtoBuf_Enum};
+use error_code::ErrorCode;
+use flowy_derive::ProtoBuf;
 use lib_dispatch::prelude::{EventResponse, ResponseBuilder};
-use protobuf::ProtobufEnum;
-use std::{
-    convert::{TryFrom, TryInto},
-    fmt::Debug,
-};
+use std::{convert::TryInto, fmt, fmt::Debug};
+
+pub type FlowyResult<T> = std::result::Result<T, FlowyError>;
 
 #[derive(Debug, Default, Clone, ProtoBuf)]
 pub struct FlowyError {
@@ -18,7 +15,7 @@ pub struct FlowyError {
     pub msg: String,
 }
 
-macro_rules! static_any_error {
+macro_rules! static_flowy_error {
     ($name:ident, $code:expr) => {
         #[allow(non_snake_case, missing_docs)]
         pub fn $name() -> FlowyError { $code.into() }
@@ -37,7 +34,34 @@ impl FlowyError {
         self
     }
 
-    static_any_error!(internal, ErrorCode::Internal);
+    static_flowy_error!(internal, ErrorCode::Internal);
+    static_flowy_error!(record_not_found, ErrorCode::RecordNotFound);
+    static_flowy_error!(workspace_name, ErrorCode::WorkspaceNameInvalid);
+    static_flowy_error!(workspace_id, ErrorCode::WorkspaceIdInvalid);
+    static_flowy_error!(color_style, ErrorCode::AppColorStyleInvalid);
+    static_flowy_error!(workspace_desc, ErrorCode::WorkspaceDescTooLong);
+    static_flowy_error!(app_name, ErrorCode::AppNameInvalid);
+    static_flowy_error!(invalid_app_id, ErrorCode::AppIdInvalid);
+    static_flowy_error!(view_name, ErrorCode::ViewNameInvalid);
+    static_flowy_error!(view_thumbnail, ErrorCode::ViewThumbnailInvalid);
+    static_flowy_error!(invalid_view_id, ErrorCode::ViewIdInvalid);
+    static_flowy_error!(view_desc, ErrorCode::ViewDescTooLong);
+    static_flowy_error!(view_data, ErrorCode::ViewDataInvalid);
+    static_flowy_error!(unauthorized, ErrorCode::UserUnauthorized);
+    static_flowy_error!(connection, ErrorCode::ConnectError);
+    static_flowy_error!(email_empty, ErrorCode::EmailIsEmpty);
+    static_flowy_error!(email_format, ErrorCode::EmailFormatInvalid);
+    static_flowy_error!(email_exist, ErrorCode::EmailAlreadyExists);
+    static_flowy_error!(password_empty, ErrorCode::PasswordIsEmpty);
+    static_flowy_error!(passworkd_too_long, ErrorCode::PasswordTooLong);
+    static_flowy_error!(password_forbid_char, ErrorCode::PasswordContainsForbidCharacters);
+    static_flowy_error!(password_format, ErrorCode::PasswordFormatInvalid);
+    static_flowy_error!(password_not_match, ErrorCode::PasswordNotMatch);
+    static_flowy_error!(name_too_long, ErrorCode::UserNameTooLong);
+    static_flowy_error!(name_forbid_char, ErrorCode::UserNameContainForbiddenCharacters);
+    static_flowy_error!(name_empty, ErrorCode::UserNameIsEmpty);
+    static_flowy_error!(user_id, ErrorCode::UserIdInvalid);
+    static_flowy_error!(user_not_exist, ErrorCode::UserNotExist);
 }
 
 impl std::convert::From<ErrorCode> for FlowyError {
@@ -49,26 +73,6 @@ impl std::convert::From<ErrorCode> for FlowyError {
     }
 }
 
-#[derive(Debug, Clone, ProtoBuf_Enum, Display, PartialEq, Eq)]
-pub enum ErrorCode {
-    #[display(fmt = "Internal error")]
-    Internal = 0,
-}
-
-impl ErrorCode {
-    pub fn value(&self) -> i32 {
-        let code: ProtoBufErrorCode = self.clone().try_into().unwrap();
-        code.value()
-    }
-
-    pub fn from_i32(value: i32) -> Self {
-        match ProtoBufErrorCode::from_i32(value) {
-            None => ErrorCode::Internal,
-            Some(code) => ErrorCode::try_from(&code).unwrap(),
-        }
-    }
-}
-
 pub fn internal_error<T>(e: T) -> FlowyError
 where
     T: std::fmt::Debug,
@@ -76,9 +80,21 @@ where
     FlowyError::internal().context(e)
 }
 
+impl fmt::Display for FlowyError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { write!(f, "{:?}: {}", &self.code, &self.msg) }
+}
+
 impl lib_dispatch::Error for FlowyError {
     fn as_response(&self) -> EventResponse {
         let bytes: Bytes = self.clone().try_into().unwrap();
         ResponseBuilder::Err().data(bytes).build()
     }
 }
+
+impl std::convert::From<std::io::Error> for FlowyError {
+    fn from(error: std::io::Error) -> Self { FlowyError::internal().context(error) }
+}
+
+impl std::convert::From<protobuf::ProtobufError> for FlowyError {
+    fn from(e: protobuf::ProtobufError) -> Self { FlowyError::internal().context(e) }
+}
diff --git a/frontend/rust-lib/flowy-error/src/ext/backend.rs b/frontend/rust-lib/flowy-error/src/ext/backend.rs
new file mode 100644
index 0000000000..68cc9dca45
--- /dev/null
+++ b/frontend/rust-lib/flowy-error/src/ext/backend.rs
@@ -0,0 +1,22 @@
+use crate::FlowyError;
+use backend_service::errors::{ErrorCode as ServerErrorCode, ServerError};
+use error_code::ErrorCode;
+
+impl std::convert::From<ServerError> for FlowyError {
+    fn from(error: ServerError) -> Self {
+        let code = server_error_to_flowy_error(error.code);
+        FlowyError::new(code, &error.msg)
+    }
+}
+
+fn server_error_to_flowy_error(code: ServerErrorCode) -> ErrorCode {
+    match code {
+        ServerErrorCode::UserUnauthorized => ErrorCode::UserUnauthorized,
+        ServerErrorCode::PasswordNotMatch => ErrorCode::PasswordNotMatch,
+        ServerErrorCode::RecordNotFound => ErrorCode::RecordNotFound,
+        ServerErrorCode::ConnectRefused | ServerErrorCode::ConnectTimeout | ServerErrorCode::ConnectClose => {
+            ErrorCode::ConnectError
+        },
+        _ => ErrorCode::Internal,
+    }
+}
diff --git a/frontend/rust-lib/flowy-error/src/ext/collaborate.rs b/frontend/rust-lib/flowy-error/src/ext/collaborate.rs
new file mode 100644
index 0000000000..82246f7792
--- /dev/null
+++ b/frontend/rust-lib/flowy-error/src/ext/collaborate.rs
@@ -0,0 +1,5 @@
+use crate::FlowyError;
+
+impl std::convert::From<flowy_collaboration::errors::CollaborateError> for FlowyError {
+    fn from(error: flowy_collaboration::errors::CollaborateError) -> Self { FlowyError::internal().context(error) }
+}
diff --git a/frontend/rust-lib/flowy-error/src/ext/database.rs b/frontend/rust-lib/flowy-error/src/ext/database.rs
new file mode 100644
index 0000000000..f395a0235c
--- /dev/null
+++ b/frontend/rust-lib/flowy-error/src/ext/database.rs
@@ -0,0 +1,15 @@
+use crate::FlowyError;
+
+impl std::convert::From<flowy_database::Error> for FlowyError {
+    fn from(error: flowy_database::Error) -> Self { FlowyError::internal().context(error) }
+}
+
+impl std::convert::From<::r2d2::Error> for FlowyError {
+    fn from(error: r2d2::Error) -> Self { FlowyError::internal().context(error) }
+}
+
+// use diesel::result::{Error, DatabaseErrorKind};
+// use lib_sqlite::ErrorKind;
+impl std::convert::From<lib_sqlite::Error> for FlowyError {
+    fn from(error: lib_sqlite::Error) -> Self { FlowyError::internal().context(error) }
+}
diff --git a/frontend/rust-lib/flowy-error/src/ext/mod.rs b/frontend/rust-lib/flowy-error/src/ext/mod.rs
new file mode 100644
index 0000000000..8bd455de93
--- /dev/null
+++ b/frontend/rust-lib/flowy-error/src/ext/mod.rs
@@ -0,0 +1,27 @@
+#[cfg(feature = "collaboration")]
+mod collaborate;
+#[cfg(feature = "collaboration")]
+pub use collaborate::*;
+
+//
+#[cfg(feature = "ot")]
+mod ot;
+#[cfg(feature = "ot")]
+pub use ot::*;
+
+//
+#[cfg(feature = "serde")]
+mod serde;
+#[cfg(feature = "serde")]
+pub use serde::*;
+
+//
+#[cfg(feature = "backend")]
+mod backend;
+#[cfg(feature = "backend")]
+pub use backend::*;
+
+#[cfg(feature = "db")]
+mod database;
+#[cfg(feature = "db")]
+pub use database::*;
diff --git a/frontend/rust-lib/flowy-error/src/ext/ot.rs b/frontend/rust-lib/flowy-error/src/ext/ot.rs
new file mode 100644
index 0000000000..bfce081953
--- /dev/null
+++ b/frontend/rust-lib/flowy-error/src/ext/ot.rs
@@ -0,0 +1,5 @@
+use crate::FlowyError;
+
+impl std::convert::From<lib_ot::errors::OTError> for FlowyError {
+    fn from(error: lib_ot::errors::OTError) -> Self { FlowyError::internal().context(error) }
+}
diff --git a/frontend/rust-lib/flowy-error/src/ext/serde.rs b/frontend/rust-lib/flowy-error/src/ext/serde.rs
new file mode 100644
index 0000000000..87c7d55178
--- /dev/null
+++ b/frontend/rust-lib/flowy-error/src/ext/serde.rs
@@ -0,0 +1,5 @@
+use crate::FlowyError;
+
+impl std::convert::From<serde_json::Error> for FlowyError {
+    fn from(error: serde_json::Error) -> Self { FlowyError::internal().context(error) }
+}
diff --git a/frontend/rust-lib/flowy-error/src/lib.rs b/frontend/rust-lib/flowy-error/src/lib.rs
index e7c6be4852..756eb4e82c 100644
--- a/frontend/rust-lib/flowy-error/src/lib.rs
+++ b/frontend/rust-lib/flowy-error/src/lib.rs
@@ -1,4 +1,6 @@
 mod errors;
+mod ext;
 pub mod protobuf;
 
+pub use error_code::ErrorCode;
 pub use errors::*;
diff --git a/frontend/rust-lib/flowy-error/src/protobuf/model/errors.rs b/frontend/rust-lib/flowy-error/src/protobuf/model/errors.rs
index e30f60612c..a3dcaf639b 100644
--- a/frontend/rust-lib/flowy-error/src/protobuf/model/errors.rs
+++ b/frontend/rust-lib/flowy-error/src/protobuf/model/errors.rs
@@ -217,67 +217,17 @@ impl ::protobuf::reflect::ProtobufValue for FlowyError {
     }
 }
 
-#[derive(Clone,PartialEq,Eq,Debug,Hash)]
-pub enum ErrorCode {
-    Internal = 0,
-}
-
-impl ::protobuf::ProtobufEnum for ErrorCode {
-    fn value(&self) -> i32 {
-        *self as i32
-    }
-
-    fn from_i32(value: i32) -> ::std::option::Option<ErrorCode> {
-        match value {
-            0 => ::std::option::Option::Some(ErrorCode::Internal),
-            _ => ::std::option::Option::None
-        }
-    }
-
-    fn values() -> &'static [Self] {
-        static values: &'static [ErrorCode] = &[
-            ErrorCode::Internal,
-        ];
-        values
-    }
-
-    fn enum_descriptor_static() -> &'static ::protobuf::reflect::EnumDescriptor {
-        static descriptor: ::protobuf::rt::LazyV2<::protobuf::reflect::EnumDescriptor> = ::protobuf::rt::LazyV2::INIT;
-        descriptor.get(|| {
-            ::protobuf::reflect::EnumDescriptor::new_pb_name::<ErrorCode>("ErrorCode", file_descriptor_proto())
-        })
-    }
-}
-
-impl ::std::marker::Copy for ErrorCode {
-}
-
-impl ::std::default::Default for ErrorCode {
-    fn default() -> Self {
-        ErrorCode::Internal
-    }
-}
-
-impl ::protobuf::reflect::ProtobufValue for ErrorCode {
-    fn as_ref(&self) -> ::protobuf::reflect::ReflectValueRef {
-        ::protobuf::reflect::ReflectValueRef::Enum(::protobuf::ProtobufEnum::descriptor(self))
-    }
-}
-
 static file_descriptor_proto_data: &'static [u8] = b"\
     \n\x0cerrors.proto\"2\n\nFlowyError\x12\x12\n\x04code\x18\x01\x20\x01(\
-    \x05R\x04code\x12\x10\n\x03msg\x18\x02\x20\x01(\tR\x03msg*\x19\n\tErrorC\
-    ode\x12\x0c\n\x08Internal\x10\0J\xd9\x01\n\x06\x12\x04\0\0\x08\x01\n\x08\
-    \n\x01\x0c\x12\x03\0\0\x12\n\n\n\x02\x04\0\x12\x04\x02\0\x05\x01\n\n\n\
-    \x03\x04\0\x01\x12\x03\x02\x08\x12\n\x0b\n\x04\x04\0\x02\0\x12\x03\x03\
-    \x04\x13\n\x0c\n\x05\x04\0\x02\0\x05\x12\x03\x03\x04\t\n\x0c\n\x05\x04\0\
-    \x02\0\x01\x12\x03\x03\n\x0e\n\x0c\n\x05\x04\0\x02\0\x03\x12\x03\x03\x11\
-    \x12\n\x0b\n\x04\x04\0\x02\x01\x12\x03\x04\x04\x13\n\x0c\n\x05\x04\0\x02\
-    \x01\x05\x12\x03\x04\x04\n\n\x0c\n\x05\x04\0\x02\x01\x01\x12\x03\x04\x0b\
-    \x0e\n\x0c\n\x05\x04\0\x02\x01\x03\x12\x03\x04\x11\x12\n\n\n\x02\x05\0\
-    \x12\x04\x06\0\x08\x01\n\n\n\x03\x05\0\x01\x12\x03\x06\x05\x0e\n\x0b\n\
-    \x04\x05\0\x02\0\x12\x03\x07\x04\x11\n\x0c\n\x05\x05\0\x02\0\x01\x12\x03\
-    \x07\x04\x0c\n\x0c\n\x05\x05\0\x02\0\x02\x12\x03\x07\x0f\x10b\x06proto3\
+    \x05R\x04code\x12\x10\n\x03msg\x18\x02\x20\x01(\tR\x03msgJ\x98\x01\n\x06\
+    \x12\x04\0\0\x05\x01\n\x08\n\x01\x0c\x12\x03\0\0\x12\n\n\n\x02\x04\0\x12\
+    \x04\x02\0\x05\x01\n\n\n\x03\x04\0\x01\x12\x03\x02\x08\x12\n\x0b\n\x04\
+    \x04\0\x02\0\x12\x03\x03\x04\x13\n\x0c\n\x05\x04\0\x02\0\x05\x12\x03\x03\
+    \x04\t\n\x0c\n\x05\x04\0\x02\0\x01\x12\x03\x03\n\x0e\n\x0c\n\x05\x04\0\
+    \x02\0\x03\x12\x03\x03\x11\x12\n\x0b\n\x04\x04\0\x02\x01\x12\x03\x04\x04\
+    \x13\n\x0c\n\x05\x04\0\x02\x01\x05\x12\x03\x04\x04\n\n\x0c\n\x05\x04\0\
+    \x02\x01\x01\x12\x03\x04\x0b\x0e\n\x0c\n\x05\x04\0\x02\x01\x03\x12\x03\
+    \x04\x11\x12b\x06proto3\
 ";
 
 static file_descriptor_proto_lazy: ::protobuf::rt::LazyV2<::protobuf::descriptor::FileDescriptorProto> = ::protobuf::rt::LazyV2::INIT;
diff --git a/frontend/rust-lib/flowy-error/src/protobuf/proto/errors.proto b/frontend/rust-lib/flowy-error/src/protobuf/proto/errors.proto
index 434258f108..2be9375a15 100644
--- a/frontend/rust-lib/flowy-error/src/protobuf/proto/errors.proto
+++ b/frontend/rust-lib/flowy-error/src/protobuf/proto/errors.proto
@@ -4,6 +4,3 @@ message FlowyError {
     int32 code = 1;
     string msg = 2;
 }
-enum ErrorCode {
-    Internal = 0;
-}
diff --git a/frontend/rust-lib/flowy-net/src/handlers/mod.rs b/frontend/rust-lib/flowy-net/src/handlers/mod.rs
index 6e6486c28c..d02093db8d 100644
--- a/frontend/rust-lib/flowy-net/src/handlers/mod.rs
+++ b/frontend/rust-lib/flowy-net/src/handlers/mod.rs
@@ -1,5 +1,5 @@
 use crate::{entities::NetworkState, services::ws::WsManager};
-use bytes::Bytes;
+
 use flowy_error::FlowyError;
 use lib_dispatch::prelude::{Data, Unit};
 use std::sync::Arc;
diff --git a/frontend/rust-lib/flowy-net/src/module.rs b/frontend/rust-lib/flowy-net/src/module.rs
index 18b17ad8a5..888fb2316b 100644
--- a/frontend/rust-lib/flowy-net/src/module.rs
+++ b/frontend/rust-lib/flowy-net/src/module.rs
@@ -5,6 +5,6 @@ use std::sync::Arc;
 pub fn create(ws_manager: Arc<WsManager>) -> Module {
     Module::new()
         .name("Flowy-Network")
-        .data(ws_manager.clone())
+        .data(ws_manager)
         .event(NetworkEvent::UpdateNetworkType, update_network_ty)
 }
diff --git a/frontend/rust-lib/flowy-sdk/src/deps_resolve/document_deps.rs b/frontend/rust-lib/flowy-sdk/src/deps_resolve/document_deps.rs
index 150385f1f1..b320f13b53 100644
--- a/frontend/rust-lib/flowy-sdk/src/deps_resolve/document_deps.rs
+++ b/frontend/rust-lib/flowy-sdk/src/deps_resolve/document_deps.rs
@@ -2,15 +2,12 @@ use bytes::Bytes;
 use flowy_collaboration::entities::ws::WsDocumentData;
 use flowy_database::ConnectionPool;
 use flowy_document::{
-    errors::{internal_error, DocError},
+    errors::{internal_error, FlowyError},
     module::DocumentUser,
     services::ws::{DocumentWebSocket, WsDocumentManager, WsStateReceiver},
 };
 use flowy_net::services::ws::WsManager;
-use flowy_user::{
-    errors::{ErrorCode, UserError},
-    services::user::UserSession,
-};
+use flowy_user::services::user::UserSession;
 use lib_ws::{WsMessage, WsMessageHandler, WsModule};
 use std::{convert::TryInto, path::Path, sync::Arc};
 
@@ -20,16 +17,14 @@ impl DocumentDepsResolver {
         ws_manager: Arc<WsManager>,
         user_session: Arc<UserSession>,
     ) -> (Arc<dyn DocumentUser>, Arc<WsDocumentManager>) {
-        let user = Arc::new(DocumentUserImpl {
-            user: user_session.clone(),
-        });
+        let user = Arc::new(DocumentUserImpl { user: user_session });
 
         let sender = Arc::new(WsSenderImpl {
             ws_manager: ws_manager.clone(),
         });
         let ws_doc = Arc::new(WsDocumentManager::new(sender));
         let ws_handler = Arc::new(DocumentWsMessageReceiver { inner: ws_doc.clone() });
-        ws_manager.add_handler(ws_handler);
+        ws_manager.add_handler(ws_handler).unwrap();
         (user, ws_doc)
     }
 }
@@ -40,16 +35,12 @@ struct DocumentUserImpl {
 
 impl DocumentUserImpl {}
 
-fn map_user_error(error: UserError) -> DocError {
-    match ErrorCode::from_i32(error.code) {
-        ErrorCode::InternalError => DocError::internal().context(error.msg),
-        _ => DocError::internal().context(error),
-    }
-}
-
 impl DocumentUser for DocumentUserImpl {
-    fn user_dir(&self) -> Result<String, DocError> {
-        let dir = self.user.user_dir().map_err(|e| DocError::unauthorized().context(e))?;
+    fn user_dir(&self) -> Result<String, FlowyError> {
+        let dir = self
+            .user
+            .user_dir()
+            .map_err(|e| FlowyError::unauthorized().context(e))?;
 
         let doc_dir = format!("{}/doc", dir);
         if !Path::new(&doc_dir).exists() {
@@ -58,11 +49,11 @@ impl DocumentUser for DocumentUserImpl {
         Ok(doc_dir)
     }
 
-    fn user_id(&self) -> Result<String, DocError> { self.user.user_id().map_err(map_user_error) }
+    fn user_id(&self) -> Result<String, FlowyError> { self.user.user_id() }
 
-    fn token(&self) -> Result<String, DocError> { self.user.token().map_err(map_user_error) }
+    fn token(&self) -> Result<String, FlowyError> { self.user.token() }
 
-    fn db_pool(&self) -> Result<Arc<ConnectionPool>, DocError> { self.user.db_pool().map_err(map_user_error) }
+    fn db_pool(&self) -> Result<Arc<ConnectionPool>, FlowyError> { self.user.db_pool() }
 }
 
 struct WsSenderImpl {
@@ -70,7 +61,7 @@ struct WsSenderImpl {
 }
 
 impl DocumentWebSocket for WsSenderImpl {
-    fn send(&self, data: WsDocumentData) -> Result<(), DocError> {
+    fn send(&self, data: WsDocumentData) -> Result<(), FlowyError> {
         let bytes: Bytes = data.try_into().unwrap();
         let msg = WsMessage {
             module: WsModule::Doc,
diff --git a/frontend/rust-lib/flowy-sdk/src/deps_resolve/workspace_deps.rs b/frontend/rust-lib/flowy-sdk/src/deps_resolve/workspace_deps.rs
index e89ad9138a..f44b45568e 100644
--- a/frontend/rust-lib/flowy-sdk/src/deps_resolve/workspace_deps.rs
+++ b/frontend/rust-lib/flowy-sdk/src/deps_resolve/workspace_deps.rs
@@ -1,5 +1,5 @@
 use flowy_core::{
-    errors::WorkspaceError,
+    errors::FlowyError,
     module::{WorkspaceDatabase, WorkspaceUser},
 };
 use flowy_database::ConnectionPool;
@@ -29,23 +29,21 @@ impl WorkspaceDepsResolver {
 }
 
 impl WorkspaceDatabase for Resolver {
-    fn db_pool(&self) -> Result<Arc<ConnectionPool>, WorkspaceError> {
+    fn db_pool(&self) -> Result<Arc<ConnectionPool>, FlowyError> {
         self.user_session
             .db_pool()
-            .map_err(|e| WorkspaceError::internal().context(e))
+            .map_err(|e| FlowyError::internal().context(e))
     }
 }
 
 impl WorkspaceUser for Resolver {
-    fn user_id(&self) -> Result<String, WorkspaceError> {
+    fn user_id(&self) -> Result<String, FlowyError> {
         self.user_session
             .user_id()
-            .map_err(|e| WorkspaceError::internal().context(e))
+            .map_err(|e| FlowyError::internal().context(e))
     }
 
-    fn token(&self) -> Result<String, WorkspaceError> {
-        self.user_session
-            .token()
-            .map_err(|e| WorkspaceError::internal().context(e))
+    fn token(&self) -> Result<String, FlowyError> {
+        self.user_session.token().map_err(|e| FlowyError::internal().context(e))
     }
 }
diff --git a/frontend/rust-lib/flowy-sdk/src/lib.rs b/frontend/rust-lib/flowy-sdk/src/lib.rs
index 45cbb96a17..55efc14fa8 100644
--- a/frontend/rust-lib/flowy-sdk/src/lib.rs
+++ b/frontend/rust-lib/flowy-sdk/src/lib.rs
@@ -3,7 +3,7 @@ mod deps_resolve;
 pub mod module;
 use crate::deps_resolve::{DocumentDepsResolver, WorkspaceDepsResolver};
 use backend_service::configuration::ClientServerConfiguration;
-use flowy_core::{errors::WorkspaceError, module::init_core, prelude::CoreContext};
+use flowy_core::{errors::FlowyError, module::init_core, prelude::CoreContext};
 use flowy_document::module::FlowyDocument;
 use flowy_net::{entities::NetworkType, services::ws::WsManager};
 use flowy_user::{
@@ -130,7 +130,7 @@ async fn _listen_user_status(
             match status {
                 UserStatus::Login { token } => {
                     let _ = core.user_did_sign_in(&token).await?;
-                    let _ = ws_manager.start(token).await.unwrap();
+                    let _ = ws_manager.start(token).await?;
                 },
                 UserStatus::Logout { .. } => {
                     core.user_did_logout().await;
@@ -143,7 +143,7 @@ async fn _listen_user_status(
                     let _ = ret.send(());
                 },
             }
-            Ok::<(), WorkspaceError>(())
+            Ok::<(), FlowyError>(())
         };
 
         match result().await {
diff --git a/frontend/rust-lib/flowy-sdk/src/module.rs b/frontend/rust-lib/flowy-sdk/src/module.rs
index 9c9af5e2e1..572373b761 100644
--- a/frontend/rust-lib/flowy-sdk/src/module.rs
+++ b/frontend/rust-lib/flowy-sdk/src/module.rs
@@ -1,7 +1,5 @@
-use crate::deps_resolve::DocumentDepsResolver;
-use backend_service::configuration::ClientServerConfiguration;
 use flowy_core::prelude::CoreContext;
-use flowy_document::module::FlowyDocument;
+
 use flowy_net::services::ws::WsManager;
 use flowy_user::services::user::UserSession;
 use lib_dispatch::prelude::Module;
diff --git a/frontend/rust-lib/flowy-test/src/event_builder.rs b/frontend/rust-lib/flowy-test/src/event_builder.rs
index 0cacef01af..ca17453417 100644
--- a/frontend/rust-lib/flowy-test/src/event_builder.rs
+++ b/frontend/rust-lib/flowy-test/src/event_builder.rs
@@ -1,28 +1,22 @@
-use flowy_user::entities::UserProfile;
-use lib_dispatch::prelude::{EventDispatcher, EventResponse, FromBytes, ModuleRequest, StatusCode, ToBytes};
+use crate::FlowySDKTest;
+use flowy_user::{entities::UserProfile, errors::FlowyError};
+use lib_dispatch::prelude::{EventDispatcher, EventResponse, FromBytes, ModuleRequest, StatusCode, ToBytes, *};
 use std::{
+    convert::TryFrom,
     fmt::{Debug, Display},
     hash::Hash,
+    marker::PhantomData,
+    sync::Arc,
 };
 
-use crate::FlowySDKTest;
-use flowy_core::errors::WorkspaceError;
-
-use flowy_user::errors::UserError;
-use lib_dispatch::prelude::*;
-use std::{convert::TryFrom, marker::PhantomData, sync::Arc};
-
-pub type CoreModuleEventBuilder = EventBuilder<WorkspaceError>;
+pub type CoreModuleEventBuilder = EventBuilder<FlowyError>;
 impl CoreModuleEventBuilder {
     pub fn new(sdk: FlowySDKTest) -> Self { EventBuilder::test(TestContext::new(sdk)) }
-}
-
-pub type UserModuleEventBuilder = EventBuilder<UserError>;
-impl UserModuleEventBuilder {
-    pub fn new(sdk: FlowySDKTest) -> Self { EventBuilder::test(TestContext::new(sdk)) }
     pub fn user_profile(&self) -> &Option<UserProfile> { &self.user_profile }
 }
 
+pub type UserModuleEventBuilder = CoreModuleEventBuilder;
+
 #[derive(Clone)]
 pub struct EventBuilder<E> {
     context: TestContext,
diff --git a/frontend/rust-lib/flowy-test/src/helper.rs b/frontend/rust-lib/flowy-test/src/helper.rs
index a533e8473f..c276462630 100644
--- a/frontend/rust-lib/flowy-test/src/helper.rs
+++ b/frontend/rust-lib/flowy-test/src/helper.rs
@@ -13,7 +13,7 @@ use flowy_core::{
 };
 use flowy_user::{
     entities::{SignInRequest, SignUpRequest, UserProfile},
-    errors::UserError,
+    errors::FlowyError,
     event::UserEvent::{InitUser, SignIn, SignOut, SignUp},
 };
 use lib_dispatch::prelude::{EventDispatcher, ModuleRequest, ToBytes};
@@ -316,7 +316,7 @@ pub fn sign_up(dispatch: Arc<EventDispatcher>) -> SignUpContext {
 
     let request = ModuleRequest::new(SignUp).payload(payload);
     let user_profile = EventDispatcher::sync_send(dispatch, request)
-        .parse::<UserProfile, UserError>()
+        .parse::<UserProfile, FlowyError>()
         .unwrap()
         .unwrap();
 
@@ -336,7 +336,7 @@ pub async fn async_sign_up(dispatch: Arc<EventDispatcher>) -> SignUpContext {
     let request = ModuleRequest::new(SignUp).payload(payload);
     let user_profile = EventDispatcher::async_send(dispatch.clone(), request)
         .await
-        .parse::<UserProfile, UserError>()
+        .parse::<UserProfile, FlowyError>()
         .unwrap()
         .unwrap();
 
@@ -361,7 +361,7 @@ fn sign_in(dispatch: Arc<EventDispatcher>) -> UserProfile {
 
     let request = ModuleRequest::new(SignIn).payload(payload);
     EventDispatcher::sync_send(dispatch, request)
-        .parse::<UserProfile, UserError>()
+        .parse::<UserProfile, FlowyError>()
         .unwrap()
         .unwrap()
 }
diff --git a/frontend/rust-lib/flowy-user/Cargo.toml b/frontend/rust-lib/flowy-user/Cargo.toml
index d688229ed7..c6532cfbb0 100644
--- a/frontend/rust-lib/flowy-user/Cargo.toml
+++ b/frontend/rust-lib/flowy-user/Cargo.toml
@@ -19,6 +19,7 @@ flowy-database = { path = "../flowy-database" }
 flowy-net = { path = "../flowy-net" }
 dart-notify = { path = "../dart-notify" }
 lib-dispatch = { path = "../lib-dispatch" }
+flowy-error = { path = "../flowy-error", features = ["db", "backend"] }
 
 
 tracing = { version = "0.1", features = ["log"] }
diff --git a/frontend/rust-lib/flowy-user/src/errors.rs b/frontend/rust-lib/flowy-user/src/errors.rs
deleted file mode 100644
index 814c40d2d8..0000000000
--- a/frontend/rust-lib/flowy-user/src/errors.rs
+++ /dev/null
@@ -1,117 +0,0 @@
-use bytes::Bytes;
-use flowy_derive::ProtoBuf;
-pub use flowy_user_infra::errors::ErrorCode;
-use lib_dispatch::prelude::{EventResponse, ResponseBuilder};
-use std::{convert::TryInto, fmt, fmt::Debug};
-
-#[derive(Debug, Default, Clone, ProtoBuf)]
-pub struct UserError {
-    #[pb(index = 1)]
-    pub code: i32,
-
-    #[pb(index = 2)]
-    pub msg: String,
-}
-
-impl std::fmt::Display for UserError {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { write!(f, "{:?}: {}", &self.code, &self.msg) }
-}
-
-macro_rules! static_user_error {
-    ($name:ident, $code:expr) => {
-        #[allow(non_snake_case, missing_docs)]
-        pub fn $name() -> UserError { $code.into() }
-    };
-}
-
-impl UserError {
-    pub(crate) fn new(code: ErrorCode, msg: &str) -> Self {
-        Self {
-            code: code.value(),
-            msg: msg.to_owned(),
-        }
-    }
-
-    pub fn context<T: Debug>(mut self, error: T) -> Self {
-        self.msg = format!("{:?}", error);
-        self
-    }
-
-    static_user_error!(email_empty, ErrorCode::EmailIsEmpty);
-    static_user_error!(email_format, ErrorCode::EmailFormatInvalid);
-    static_user_error!(email_exist, ErrorCode::EmailAlreadyExists);
-    static_user_error!(password_empty, ErrorCode::PasswordIsEmpty);
-    static_user_error!(passworkd_too_long, ErrorCode::PasswordTooLong);
-    static_user_error!(password_forbid_char, ErrorCode::PasswordContainsForbidCharacters);
-    static_user_error!(password_format, ErrorCode::PasswordFormatInvalid);
-    static_user_error!(password_not_match, ErrorCode::PasswordNotMatch);
-    static_user_error!(name_too_long, ErrorCode::UserNameTooLong);
-    static_user_error!(name_forbid_char, ErrorCode::UserNameContainForbiddenCharacters);
-    static_user_error!(name_empty, ErrorCode::UserNameIsEmpty);
-    static_user_error!(user_id, ErrorCode::UserIdInvalid);
-    static_user_error!(unauthorized, ErrorCode::UserUnauthorized);
-    static_user_error!(user_not_exist, ErrorCode::UserNotExist);
-    static_user_error!(internal, ErrorCode::InternalError);
-}
-
-impl std::convert::From<ErrorCode> for UserError {
-    fn from(code: ErrorCode) -> Self {
-        UserError {
-            code: code.value(),
-            msg: format!("{}", code),
-        }
-    }
-}
-
-impl std::convert::From<flowy_database::Error> for UserError {
-    fn from(error: flowy_database::Error) -> Self {
-        match error {
-            flowy_database::Error::NotFound => UserError::user_not_exist().context(error),
-            _ => UserError::internal().context(error),
-        }
-    }
-}
-
-impl std::convert::From<::r2d2::Error> for UserError {
-    fn from(error: r2d2::Error) -> Self { UserError::internal().context(error) }
-}
-
-// use diesel::result::{Error, DatabaseErrorKind};
-// use lib_sqlite::ErrorKind;
-impl std::convert::From<lib_sqlite::Error> for UserError {
-    fn from(error: lib_sqlite::Error) -> Self { UserError::internal().context(error) }
-}
-
-impl std::convert::From<backend_service::errors::ServerError> for UserError {
-    fn from(error: backend_service::errors::ServerError) -> Self {
-        let (code, msg) = server_error_to_user_error(error);
-        UserError::new(code, &msg)
-    }
-}
-
-use backend_service::errors::ErrorCode as ServerErrorCode;
-fn server_error_to_user_error(error: backend_service::errors::ServerError) -> (ErrorCode, String) {
-    let code = match error.code {
-        ServerErrorCode::UserUnauthorized => ErrorCode::UserUnauthorized,
-        ServerErrorCode::PasswordNotMatch => ErrorCode::PasswordNotMatch,
-        ServerErrorCode::RecordNotFound => ErrorCode::UserNotExist,
-        ServerErrorCode::ConnectRefused | ServerErrorCode::ConnectTimeout | ServerErrorCode::ConnectClose => {
-            ErrorCode::ServerError
-        },
-        _ => ErrorCode::InternalError,
-    };
-
-    if code != ErrorCode::InternalError {
-        let msg = format!("{}", &code);
-        (code, msg)
-    } else {
-        (code, error.msg)
-    }
-}
-
-impl lib_dispatch::Error for UserError {
-    fn as_response(&self) -> EventResponse {
-        let bytes: Bytes = self.clone().try_into().unwrap();
-        ResponseBuilder::Err().data(bytes).build()
-    }
-}
diff --git a/frontend/rust-lib/flowy-user/src/event.rs b/frontend/rust-lib/flowy-user/src/event.rs
index efd8f42112..0a2357fb26 100644
--- a/frontend/rust-lib/flowy-user/src/event.rs
+++ b/frontend/rust-lib/flowy-user/src/event.rs
@@ -2,7 +2,7 @@ use flowy_derive::{Flowy_Event, ProtoBuf_Enum};
 use strum_macros::Display;
 
 #[derive(Clone, Copy, PartialEq, Eq, Debug, Display, Hash, ProtoBuf_Enum, Flowy_Event)]
-#[event_err = "UserError"]
+#[event_err = "FlowyError"]
 pub enum UserEvent {
     #[event()]
     InitUser       = 0,
diff --git a/frontend/rust-lib/flowy-user/src/handlers/auth_handler.rs b/frontend/rust-lib/flowy-user/src/handlers/auth_handler.rs
index 1fdcb67f96..fa99f19b06 100644
--- a/frontend/rust-lib/flowy-user/src/handlers/auth_handler.rs
+++ b/frontend/rust-lib/flowy-user/src/handlers/auth_handler.rs
@@ -1,10 +1,13 @@
-use crate::{entities::*, errors::UserError, services::user::UserSession};
+use crate::{entities::*, errors::FlowyError, services::user::UserSession};
 use lib_dispatch::prelude::*;
 use std::{convert::TryInto, sync::Arc};
 
 // tracing instrument 👉🏻 https://docs.rs/tracing/0.1.26/tracing/attr.instrument.html
 #[tracing::instrument(name = "sign_in", skip(data, session), fields(email = %data.email), err)]
-pub async fn sign_in(data: Data<SignInRequest>, session: Unit<Arc<UserSession>>) -> DataResult<UserProfile, UserError> {
+pub async fn sign_in(
+    data: Data<SignInRequest>,
+    session: Unit<Arc<UserSession>>,
+) -> DataResult<UserProfile, FlowyError> {
     let params: SignInParams = data.into_inner().try_into()?;
     let user_profile = session.sign_in(params).await?;
     data_result(user_profile)
@@ -19,7 +22,10 @@ pub async fn sign_in(data: Data<SignInRequest>, session: Unit<Arc<UserSession>>)
     ),
     err
 )]
-pub async fn sign_up(data: Data<SignUpRequest>, session: Unit<Arc<UserSession>>) -> DataResult<UserProfile, UserError> {
+pub async fn sign_up(
+    data: Data<SignUpRequest>,
+    session: Unit<Arc<UserSession>>,
+) -> DataResult<UserProfile, FlowyError> {
     let params: SignUpParams = data.into_inner().try_into()?;
     let user_profile = session.sign_up(params).await?;
 
diff --git a/frontend/rust-lib/flowy-user/src/handlers/user_handler.rs b/frontend/rust-lib/flowy-user/src/handlers/user_handler.rs
index 4e3a18e11c..e282632c36 100644
--- a/frontend/rust-lib/flowy-user/src/handlers/user_handler.rs
+++ b/frontend/rust-lib/flowy-user/src/handlers/user_handler.rs
@@ -1,28 +1,28 @@
-use crate::{entities::*, errors::UserError, services::user::UserSession};
-use flowy_net::entities::NetworkState;
+use crate::{entities::*, errors::FlowyError, services::user::UserSession};
+
 use lib_dispatch::prelude::*;
 use std::{convert::TryInto, sync::Arc};
 
 #[tracing::instrument(skip(session))]
-pub async fn init_user_handler(session: Unit<Arc<UserSession>>) -> Result<(), UserError> {
+pub async fn init_user_handler(session: Unit<Arc<UserSession>>) -> Result<(), FlowyError> {
     let _ = session.init_user().await?;
     Ok(())
 }
 
 #[tracing::instrument(skip(session))]
-pub async fn check_user_handler(session: Unit<Arc<UserSession>>) -> DataResult<UserProfile, UserError> {
+pub async fn check_user_handler(session: Unit<Arc<UserSession>>) -> DataResult<UserProfile, FlowyError> {
     let user_profile = session.check_user().await?;
     data_result(user_profile)
 }
 
 #[tracing::instrument(skip(session))]
-pub async fn get_user_profile_handler(session: Unit<Arc<UserSession>>) -> DataResult<UserProfile, UserError> {
+pub async fn get_user_profile_handler(session: Unit<Arc<UserSession>>) -> DataResult<UserProfile, FlowyError> {
     let user_profile = session.user_profile().await?;
     data_result(user_profile)
 }
 
 #[tracing::instrument(name = "sign_out", skip(session))]
-pub async fn sign_out(session: Unit<Arc<UserSession>>) -> Result<(), UserError> {
+pub async fn sign_out(session: Unit<Arc<UserSession>>) -> Result<(), FlowyError> {
     let _ = session.sign_out().await?;
     Ok(())
 }
@@ -31,7 +31,7 @@ pub async fn sign_out(session: Unit<Arc<UserSession>>) -> Result<(), UserError>
 pub async fn update_user_handler(
     data: Data<UpdateUserRequest>,
     session: Unit<Arc<UserSession>>,
-) -> Result<(), UserError> {
+) -> Result<(), FlowyError> {
     let params: UpdateUserParams = data.into_inner().try_into()?;
     session.update_user(params).await?;
     Ok(())
diff --git a/frontend/rust-lib/flowy-user/src/lib.rs b/frontend/rust-lib/flowy-user/src/lib.rs
index 33a922fa34..5484162948 100644
--- a/frontend/rust-lib/flowy-user/src/lib.rs
+++ b/frontend/rust-lib/flowy-user/src/lib.rs
@@ -1,14 +1,11 @@
-mod handlers;
-mod sql_tables;
-
-pub mod errors;
-
 pub mod entities;
 pub mod event;
+mod handlers;
 pub mod module;
 pub mod notify;
 pub mod protobuf;
 pub mod services;
+mod sql_tables;
 
 #[macro_use]
 extern crate flowy_database;
@@ -16,3 +13,7 @@ extern crate flowy_database;
 pub mod prelude {
     pub use crate::{entities::*, services::server::*};
 }
+
+pub mod errors {
+    pub use flowy_error::{internal_error, ErrorCode, FlowyError};
+}
diff --git a/frontend/rust-lib/flowy-user/src/protobuf/model/errors.rs b/frontend/rust-lib/flowy-user/src/protobuf/model/errors.rs
deleted file mode 100644
index 2e50c10899..0000000000
--- a/frontend/rust-lib/flowy-user/src/protobuf/model/errors.rs
+++ /dev/null
@@ -1,243 +0,0 @@
-// This file is generated by rust-protobuf 2.22.1. Do not edit
-// @generated
-
-// https://github.com/rust-lang/rust-clippy/issues/702
-#![allow(unknown_lints)]
-#![allow(clippy::all)]
-
-#![allow(unused_attributes)]
-#![cfg_attr(rustfmt, rustfmt::skip)]
-
-#![allow(box_pointers)]
-#![allow(dead_code)]
-#![allow(missing_docs)]
-#![allow(non_camel_case_types)]
-#![allow(non_snake_case)]
-#![allow(non_upper_case_globals)]
-#![allow(trivial_casts)]
-#![allow(unused_imports)]
-#![allow(unused_results)]
-//! Generated file from `errors.proto`
-
-/// Generated files are compatible only with the same version
-/// of protobuf runtime.
-// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_22_1;
-
-#[derive(PartialEq,Clone,Default)]
-pub struct UserError {
-    // message fields
-    pub code: i32,
-    pub msg: ::std::string::String,
-    // special fields
-    pub unknown_fields: ::protobuf::UnknownFields,
-    pub cached_size: ::protobuf::CachedSize,
-}
-
-impl<'a> ::std::default::Default for &'a UserError {
-    fn default() -> &'a UserError {
-        <UserError as ::protobuf::Message>::default_instance()
-    }
-}
-
-impl UserError {
-    pub fn new() -> UserError {
-        ::std::default::Default::default()
-    }
-
-    // int32 code = 1;
-
-
-    pub fn get_code(&self) -> i32 {
-        self.code
-    }
-    pub fn clear_code(&mut self) {
-        self.code = 0;
-    }
-
-    // Param is passed by value, moved
-    pub fn set_code(&mut self, v: i32) {
-        self.code = v;
-    }
-
-    // string msg = 2;
-
-
-    pub fn get_msg(&self) -> &str {
-        &self.msg
-    }
-    pub fn clear_msg(&mut self) {
-        self.msg.clear();
-    }
-
-    // Param is passed by value, moved
-    pub fn set_msg(&mut self, v: ::std::string::String) {
-        self.msg = v;
-    }
-
-    // Mutable pointer to the field.
-    // If field is not initialized, it is initialized with default value first.
-    pub fn mut_msg(&mut self) -> &mut ::std::string::String {
-        &mut self.msg
-    }
-
-    // Take field
-    pub fn take_msg(&mut self) -> ::std::string::String {
-        ::std::mem::replace(&mut self.msg, ::std::string::String::new())
-    }
-}
-
-impl ::protobuf::Message for UserError {
-    fn is_initialized(&self) -> bool {
-        true
-    }
-
-    fn merge_from(&mut self, is: &mut ::protobuf::CodedInputStream<'_>) -> ::protobuf::ProtobufResult<()> {
-        while !is.eof()? {
-            let (field_number, wire_type) = is.read_tag_unpack()?;
-            match field_number {
-                1 => {
-                    if wire_type != ::protobuf::wire_format::WireTypeVarint {
-                        return ::std::result::Result::Err(::protobuf::rt::unexpected_wire_type(wire_type));
-                    }
-                    let tmp = is.read_int32()?;
-                    self.code = tmp;
-                },
-                2 => {
-                    ::protobuf::rt::read_singular_proto3_string_into(wire_type, is, &mut self.msg)?;
-                },
-                _ => {
-                    ::protobuf::rt::read_unknown_or_skip_group(field_number, wire_type, is, self.mut_unknown_fields())?;
-                },
-            };
-        }
-        ::std::result::Result::Ok(())
-    }
-
-    // Compute sizes of nested messages
-    #[allow(unused_variables)]
-    fn compute_size(&self) -> u32 {
-        let mut my_size = 0;
-        if self.code != 0 {
-            my_size += ::protobuf::rt::value_size(1, self.code, ::protobuf::wire_format::WireTypeVarint);
-        }
-        if !self.msg.is_empty() {
-            my_size += ::protobuf::rt::string_size(2, &self.msg);
-        }
-        my_size += ::protobuf::rt::unknown_fields_size(self.get_unknown_fields());
-        self.cached_size.set(my_size);
-        my_size
-    }
-
-    fn write_to_with_cached_sizes(&self, os: &mut ::protobuf::CodedOutputStream<'_>) -> ::protobuf::ProtobufResult<()> {
-        if self.code != 0 {
-            os.write_int32(1, self.code)?;
-        }
-        if !self.msg.is_empty() {
-            os.write_string(2, &self.msg)?;
-        }
-        os.write_unknown_fields(self.get_unknown_fields())?;
-        ::std::result::Result::Ok(())
-    }
-
-    fn get_cached_size(&self) -> u32 {
-        self.cached_size.get()
-    }
-
-    fn get_unknown_fields(&self) -> &::protobuf::UnknownFields {
-        &self.unknown_fields
-    }
-
-    fn mut_unknown_fields(&mut self) -> &mut ::protobuf::UnknownFields {
-        &mut self.unknown_fields
-    }
-
-    fn as_any(&self) -> &dyn (::std::any::Any) {
-        self as &dyn (::std::any::Any)
-    }
-    fn as_any_mut(&mut self) -> &mut dyn (::std::any::Any) {
-        self as &mut dyn (::std::any::Any)
-    }
-    fn into_any(self: ::std::boxed::Box<Self>) -> ::std::boxed::Box<dyn (::std::any::Any)> {
-        self
-    }
-
-    fn descriptor(&self) -> &'static ::protobuf::reflect::MessageDescriptor {
-        Self::descriptor_static()
-    }
-
-    fn new() -> UserError {
-        UserError::new()
-    }
-
-    fn descriptor_static() -> &'static ::protobuf::reflect::MessageDescriptor {
-        static descriptor: ::protobuf::rt::LazyV2<::protobuf::reflect::MessageDescriptor> = ::protobuf::rt::LazyV2::INIT;
-        descriptor.get(|| {
-            let mut fields = ::std::vec::Vec::new();
-            fields.push(::protobuf::reflect::accessor::make_simple_field_accessor::<_, ::protobuf::types::ProtobufTypeInt32>(
-                "code",
-                |m: &UserError| { &m.code },
-                |m: &mut UserError| { &mut m.code },
-            ));
-            fields.push(::protobuf::reflect::accessor::make_simple_field_accessor::<_, ::protobuf::types::ProtobufTypeString>(
-                "msg",
-                |m: &UserError| { &m.msg },
-                |m: &mut UserError| { &mut m.msg },
-            ));
-            ::protobuf::reflect::MessageDescriptor::new_pb_name::<UserError>(
-                "UserError",
-                fields,
-                file_descriptor_proto()
-            )
-        })
-    }
-
-    fn default_instance() -> &'static UserError {
-        static instance: ::protobuf::rt::LazyV2<UserError> = ::protobuf::rt::LazyV2::INIT;
-        instance.get(UserError::new)
-    }
-}
-
-impl ::protobuf::Clear for UserError {
-    fn clear(&mut self) {
-        self.code = 0;
-        self.msg.clear();
-        self.unknown_fields.clear();
-    }
-}
-
-impl ::std::fmt::Debug for UserError {
-    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
-        ::protobuf::text_format::fmt(self, f)
-    }
-}
-
-impl ::protobuf::reflect::ProtobufValue for UserError {
-    fn as_ref(&self) -> ::protobuf::reflect::ReflectValueRef {
-        ::protobuf::reflect::ReflectValueRef::Message(self)
-    }
-}
-
-static file_descriptor_proto_data: &'static [u8] = b"\
-    \n\x0cerrors.proto\"1\n\tUserError\x12\x12\n\x04code\x18\x01\x20\x01(\
-    \x05R\x04code\x12\x10\n\x03msg\x18\x02\x20\x01(\tR\x03msgJ\x98\x01\n\x06\
-    \x12\x04\0\0\x05\x01\n\x08\n\x01\x0c\x12\x03\0\0\x12\n\n\n\x02\x04\0\x12\
-    \x04\x02\0\x05\x01\n\n\n\x03\x04\0\x01\x12\x03\x02\x08\x11\n\x0b\n\x04\
-    \x04\0\x02\0\x12\x03\x03\x04\x13\n\x0c\n\x05\x04\0\x02\0\x05\x12\x03\x03\
-    \x04\t\n\x0c\n\x05\x04\0\x02\0\x01\x12\x03\x03\n\x0e\n\x0c\n\x05\x04\0\
-    \x02\0\x03\x12\x03\x03\x11\x12\n\x0b\n\x04\x04\0\x02\x01\x12\x03\x04\x04\
-    \x13\n\x0c\n\x05\x04\0\x02\x01\x05\x12\x03\x04\x04\n\n\x0c\n\x05\x04\0\
-    \x02\x01\x01\x12\x03\x04\x0b\x0e\n\x0c\n\x05\x04\0\x02\x01\x03\x12\x03\
-    \x04\x11\x12b\x06proto3\
-";
-
-static file_descriptor_proto_lazy: ::protobuf::rt::LazyV2<::protobuf::descriptor::FileDescriptorProto> = ::protobuf::rt::LazyV2::INIT;
-
-fn parse_descriptor_proto() -> ::protobuf::descriptor::FileDescriptorProto {
-    ::protobuf::Message::parse_from_bytes(file_descriptor_proto_data).unwrap()
-}
-
-pub fn file_descriptor_proto() -> &'static ::protobuf::descriptor::FileDescriptorProto {
-    file_descriptor_proto_lazy.get(|| {
-        parse_descriptor_proto()
-    })
-}
diff --git a/frontend/rust-lib/flowy-user/src/protobuf/model/mod.rs b/frontend/rust-lib/flowy-user/src/protobuf/model/mod.rs
index cd35f2090b..b9a7e246fd 100644
--- a/frontend/rust-lib/flowy-user/src/protobuf/model/mod.rs
+++ b/frontend/rust-lib/flowy-user/src/protobuf/model/mod.rs
@@ -4,8 +4,5 @@
 mod observable;
 pub use observable::*;
 
-mod errors;
-pub use errors::*;
-
 mod event;
 pub use event::*;
diff --git a/frontend/rust-lib/flowy-user/src/protobuf/proto/errors.proto b/frontend/rust-lib/flowy-user/src/protobuf/proto/errors.proto
deleted file mode 100644
index b2dec22eb0..0000000000
--- a/frontend/rust-lib/flowy-user/src/protobuf/proto/errors.proto
+++ /dev/null
@@ -1,6 +0,0 @@
-syntax = "proto3";
-
-message UserError {
-    int32 code = 1;
-    string msg = 2;
-}
diff --git a/frontend/rust-lib/flowy-user/src/services/server/mod.rs b/frontend/rust-lib/flowy-user/src/services/server/mod.rs
index f6c4ea33f0..6178abd3dd 100644
--- a/frontend/rust-lib/flowy-user/src/services/server/mod.rs
+++ b/frontend/rust-lib/flowy-user/src/services/server/mod.rs
@@ -8,17 +8,17 @@ use std::sync::Arc;
 pub(crate) type Server = Arc<dyn UserServerAPI + Send + Sync>;
 use crate::{
     entities::{SignInParams, SignInResponse, SignUpParams, SignUpResponse, UpdateUserParams, UserProfile},
-    errors::UserError,
+    errors::FlowyError,
 };
 use backend_service::configuration::ClientServerConfiguration;
 use lib_infra::future::FutureResult;
 
 pub trait UserServerAPI {
-    fn sign_up(&self, params: SignUpParams) -> FutureResult<SignUpResponse, UserError>;
-    fn sign_in(&self, params: SignInParams) -> FutureResult<SignInResponse, UserError>;
-    fn sign_out(&self, token: &str) -> FutureResult<(), UserError>;
-    fn update_user(&self, token: &str, params: UpdateUserParams) -> FutureResult<(), UserError>;
-    fn get_user(&self, token: &str) -> FutureResult<UserProfile, UserError>;
+    fn sign_up(&self, params: SignUpParams) -> FutureResult<SignUpResponse, FlowyError>;
+    fn sign_in(&self, params: SignInParams) -> FutureResult<SignInResponse, FlowyError>;
+    fn sign_out(&self, token: &str) -> FutureResult<(), FlowyError>;
+    fn update_user(&self, token: &str, params: UpdateUserParams) -> FutureResult<(), FlowyError>;
+    fn get_user(&self, token: &str) -> FutureResult<UserProfile, FlowyError>;
     fn ws_addr(&self) -> String;
 }
 
diff --git a/frontend/rust-lib/flowy-user/src/services/server/server_api.rs b/frontend/rust-lib/flowy-user/src/services/server/server_api.rs
index 72d54a7319..58e16e7765 100644
--- a/frontend/rust-lib/flowy-user/src/services/server/server_api.rs
+++ b/frontend/rust-lib/flowy-user/src/services/server/server_api.rs
@@ -1,6 +1,6 @@
 use crate::{
     entities::{SignInParams, SignInResponse, SignUpParams, SignUpResponse, UpdateUserParams, UserProfile},
-    errors::UserError,
+    errors::FlowyError,
     services::server::UserServerAPI,
 };
 use backend_service::{configuration::*, user_request::*};
@@ -14,7 +14,7 @@ impl UserHttpServer {
 }
 
 impl UserServerAPI for UserHttpServer {
-    fn sign_up(&self, params: SignUpParams) -> FutureResult<SignUpResponse, UserError> {
+    fn sign_up(&self, params: SignUpParams) -> FutureResult<SignUpResponse, FlowyError> {
         let url = self.config.sign_up_url();
         FutureResult::new(async move {
             let resp = user_sign_up_request(params, &url).await?;
@@ -22,7 +22,7 @@ impl UserServerAPI for UserHttpServer {
         })
     }
 
-    fn sign_in(&self, params: SignInParams) -> FutureResult<SignInResponse, UserError> {
+    fn sign_in(&self, params: SignInParams) -> FutureResult<SignInResponse, FlowyError> {
         let url = self.config.sign_in_url();
         FutureResult::new(async move {
             let resp = user_sign_in_request(params, &url).await?;
@@ -30,7 +30,7 @@ impl UserServerAPI for UserHttpServer {
         })
     }
 
-    fn sign_out(&self, token: &str) -> FutureResult<(), UserError> {
+    fn sign_out(&self, token: &str) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.sign_out_url();
         FutureResult::new(async move {
@@ -39,7 +39,7 @@ impl UserServerAPI for UserHttpServer {
         })
     }
 
-    fn update_user(&self, token: &str, params: UpdateUserParams) -> FutureResult<(), UserError> {
+    fn update_user(&self, token: &str, params: UpdateUserParams) -> FutureResult<(), FlowyError> {
         let token = token.to_owned();
         let url = self.config.user_profile_url();
         FutureResult::new(async move {
@@ -48,7 +48,7 @@ impl UserServerAPI for UserHttpServer {
         })
     }
 
-    fn get_user(&self, token: &str) -> FutureResult<UserProfile, UserError> {
+    fn get_user(&self, token: &str) -> FutureResult<UserProfile, FlowyError> {
         let token = token.to_owned();
         let url = self.config.user_profile_url();
         FutureResult::new(async move {
@@ -77,7 +77,7 @@ impl UserServerAPI for UserHttpServer {
 //                     None => {},
 //                     Some(token) => {
 //                         let error =
-// UserError::new(ErrorCode::UserUnauthorized, "");
+// FlowyError::new(ErrorCode::UserUnauthorized, "");
 // dart_notify(token, UserNotification::UserUnauthorized)
 // .error(error)                             .send()
 //                     },
diff --git a/frontend/rust-lib/flowy-user/src/services/server/server_api_mock.rs b/frontend/rust-lib/flowy-user/src/services/server/server_api_mock.rs
index 435020e856..ae8c68da47 100644
--- a/frontend/rust-lib/flowy-user/src/services/server/server_api_mock.rs
+++ b/frontend/rust-lib/flowy-user/src/services/server/server_api_mock.rs
@@ -1,6 +1,6 @@
 use crate::{
     entities::{SignInParams, SignInResponse, SignUpParams, SignUpResponse, UpdateUserParams, UserProfile},
-    errors::UserError,
+    errors::FlowyError,
 };
 
 use crate::services::server::UserServerAPI;
@@ -11,7 +11,7 @@ pub struct UserServerMock {}
 impl UserServerMock {}
 
 impl UserServerAPI for UserServerMock {
-    fn sign_up(&self, params: SignUpParams) -> FutureResult<SignUpResponse, UserError> {
+    fn sign_up(&self, params: SignUpParams) -> FutureResult<SignUpResponse, FlowyError> {
         let uid = uuid();
         FutureResult::new(async move {
             Ok(SignUpResponse {
@@ -23,7 +23,7 @@ impl UserServerAPI for UserServerMock {
         })
     }
 
-    fn sign_in(&self, params: SignInParams) -> FutureResult<SignInResponse, UserError> {
+    fn sign_in(&self, params: SignInParams) -> FutureResult<SignInResponse, FlowyError> {
         let user_id = uuid();
         FutureResult::new(async {
             Ok(SignInResponse {
@@ -35,13 +35,13 @@ impl UserServerAPI for UserServerMock {
         })
     }
 
-    fn sign_out(&self, _token: &str) -> FutureResult<(), UserError> { FutureResult::new(async { Ok(()) }) }
+    fn sign_out(&self, _token: &str) -> FutureResult<(), FlowyError> { FutureResult::new(async { Ok(()) }) }
 
-    fn update_user(&self, _token: &str, _params: UpdateUserParams) -> FutureResult<(), UserError> {
+    fn update_user(&self, _token: &str, _params: UpdateUserParams) -> FutureResult<(), FlowyError> {
         FutureResult::new(async { Ok(()) })
     }
 
-    fn get_user(&self, _token: &str) -> FutureResult<UserProfile, UserError> {
+    fn get_user(&self, _token: &str) -> FutureResult<UserProfile, FlowyError> {
         FutureResult::new(async { Ok(UserProfile::default()) })
     }
 
diff --git a/frontend/rust-lib/flowy-user/src/services/user/database.rs b/frontend/rust-lib/flowy-user/src/services/user/database.rs
index a3a450c792..aa4c603349 100644
--- a/frontend/rust-lib/flowy-user/src/services/user/database.rs
+++ b/frontend/rust-lib/flowy-user/src/services/user/database.rs
@@ -1,4 +1,4 @@
-use crate::errors::UserError;
+use crate::errors::FlowyError;
 use flowy_database::{DBConnection, Database};
 use lazy_static::lazy_static;
 use lib_sqlite::ConnectionPool;
@@ -20,20 +20,20 @@ impl UserDB {
         }
     }
 
-    fn open_user_db(&self, user_id: &str) -> Result<(), UserError> {
+    fn open_user_db(&self, user_id: &str) -> Result<(), FlowyError> {
         if user_id.is_empty() {
-            return Err(UserError::internal().context("user id is empty"));
+            return Err(FlowyError::internal().context("user id is empty"));
         }
 
         tracing::info!("open user db {}", user_id);
         let dir = format!("{}/{}", self.db_dir, user_id);
         let db = flowy_database::init(&dir).map_err(|e| {
             log::error!("init user db failed, {:?}, user_id: {}", e, user_id);
-            UserError::internal().context(e)
+            FlowyError::internal().context(e)
         })?;
 
         match DB_MAP.try_write_for(Duration::from_millis(300)) {
-            None => Err(UserError::internal().context("Acquire write lock to save user db failed")),
+            None => Err(FlowyError::internal().context("Acquire write lock to save user db failed")),
             Some(mut write_guard) => {
                 write_guard.insert(user_id.to_owned(), db);
                 Ok(())
@@ -41,9 +41,9 @@ impl UserDB {
         }
     }
 
-    pub(crate) fn close_user_db(&self, user_id: &str) -> Result<(), UserError> {
+    pub(crate) fn close_user_db(&self, user_id: &str) -> Result<(), FlowyError> {
         match DB_MAP.try_write_for(Duration::from_millis(300)) {
-            None => Err(UserError::internal().context("Acquire write lock to close user db failed")),
+            None => Err(FlowyError::internal().context("Acquire write lock to close user db failed")),
             Some(mut write_guard) => {
                 set_user_db_init(false, user_id);
                 write_guard.remove(user_id);
@@ -52,12 +52,12 @@ impl UserDB {
         }
     }
 
-    pub(crate) fn get_connection(&self, user_id: &str) -> Result<DBConnection, UserError> {
+    pub(crate) fn get_connection(&self, user_id: &str) -> Result<DBConnection, FlowyError> {
         let conn = self.get_pool(user_id)?.get()?;
         Ok(conn)
     }
 
-    pub(crate) fn get_pool(&self, user_id: &str) -> Result<Arc<ConnectionPool>, UserError> {
+    pub(crate) fn get_pool(&self, user_id: &str) -> Result<Arc<ConnectionPool>, FlowyError> {
         // Opti: INIT_LOCK try to lock the INIT_RECORD accesses. Because the write guard
         // can not nested in the read guard that will cause the deadlock.
         match INIT_LOCK.try_lock_for(Duration::from_millis(300)) {
@@ -71,9 +71,11 @@ impl UserDB {
         }
 
         match DB_MAP.try_read_for(Duration::from_millis(300)) {
-            None => Err(UserError::internal().context("Acquire read lock to read user db failed")),
+            None => Err(FlowyError::internal().context("Acquire read lock to read user db failed")),
             Some(read_guard) => match read_guard.get(user_id) {
-                None => Err(UserError::internal().context("Get connection failed. The database is not initialization")),
+                None => {
+                    Err(FlowyError::internal().context("Get connection failed. The database is not initialization"))
+                },
                 Some(database) => Ok(database.get_pool()),
             },
         }
diff --git a/frontend/rust-lib/flowy-user/src/services/user/notifier.rs b/frontend/rust-lib/flowy-user/src/services/user/notifier.rs
index a8d86a0319..eadb2fcc5b 100644
--- a/frontend/rust-lib/flowy-user/src/services/user/notifier.rs
+++ b/frontend/rust-lib/flowy-user/src/services/user/notifier.rs
@@ -1,5 +1,5 @@
 use crate::entities::{UserProfile, UserStatus};
-use flowy_net::entities::NetworkType;
+
 use tokio::sync::{broadcast, mpsc};
 
 pub struct UserNotifier {
diff --git a/frontend/rust-lib/flowy-user/src/services/user/user_session.rs b/frontend/rust-lib/flowy-user/src/services/user/user_session.rs
index d4774fa6b9..5cb571ac52 100644
--- a/frontend/rust-lib/flowy-user/src/services/user/user_session.rs
+++ b/frontend/rust-lib/flowy-user/src/services/user/user_session.rs
@@ -2,7 +2,7 @@ use std::sync::Arc;
 
 use parking_lot::RwLock;
 use serde::{Deserialize, Serialize};
-use tokio::sync::{broadcast, mpsc};
+use tokio::sync::mpsc;
 
 use backend_service::configuration::ClientServerConfiguration;
 use flowy_database::{
@@ -18,7 +18,7 @@ use lib_sqlite::ConnectionPool;
 
 use crate::{
     entities::{SignInParams, SignUpParams, UpdateUserParams, UserProfile},
-    errors::{ErrorCode, UserError},
+    errors::{ErrorCode, FlowyError},
     notify::*,
     services::{
         server::{construct_user_server, Server},
@@ -26,7 +26,6 @@ use crate::{
     },
     sql_tables::{UserTable, UserTableChangeset},
 };
-use flowy_net::entities::NetworkState;
 
 pub struct UserSessionConfig {
     root_dir: String,
@@ -73,7 +72,7 @@ impl UserSession {
         }
     }
 
-    pub fn db_connection(&self) -> Result<DBConnection, UserError> {
+    pub fn db_connection(&self) -> Result<DBConnection, FlowyError> {
         let user_id = self.get_session()?.user_id;
         self.database.get_connection(&user_id)
     }
@@ -84,13 +83,13 @@ impl UserSession {
     //
     // let pool = self.db_connection_pool()?;
     // let conn: PooledConnection<ConnectionManager> = pool.get()?;
-    pub fn db_pool(&self) -> Result<Arc<ConnectionPool>, UserError> {
+    pub fn db_pool(&self) -> Result<Arc<ConnectionPool>, FlowyError> {
         let user_id = self.get_session()?.user_id;
         self.database.get_pool(&user_id)
     }
 
     #[tracing::instrument(level = "debug", skip(self))]
-    pub async fn sign_in(&self, params: SignInParams) -> Result<UserProfile, UserError> {
+    pub async fn sign_in(&self, params: SignInParams) -> Result<UserProfile, FlowyError> {
         if self.is_login(&params.email) {
             self.user_profile().await
         } else {
@@ -105,7 +104,7 @@ impl UserSession {
     }
 
     #[tracing::instrument(level = "debug", skip(self))]
-    pub async fn sign_up(&self, params: SignUpParams) -> Result<UserProfile, UserError> {
+    pub async fn sign_up(&self, params: SignUpParams) -> Result<UserProfile, FlowyError> {
         if self.is_login(&params.email) {
             self.user_profile().await
         } else {
@@ -123,7 +122,7 @@ impl UserSession {
     }
 
     #[tracing::instrument(level = "debug", skip(self))]
-    pub async fn sign_out(&self) -> Result<(), UserError> {
+    pub async fn sign_out(&self) -> Result<(), FlowyError> {
         let session = self.get_session()?;
         let _ =
             diesel::delete(dsl::user_table.filter(dsl::id.eq(&session.user_id))).execute(&*(self.db_connection()?))?;
@@ -136,7 +135,7 @@ impl UserSession {
     }
 
     #[tracing::instrument(level = "debug", skip(self))]
-    pub async fn update_user(&self, params: UpdateUserParams) -> Result<(), UserError> {
+    pub async fn update_user(&self, params: UpdateUserParams) -> Result<(), FlowyError> {
         let session = self.get_session()?;
         let changeset = UserTableChangeset::new(params.clone());
         diesel_update_table!(user_table, changeset, &*self.db_connection()?);
@@ -145,9 +144,9 @@ impl UserSession {
         Ok(())
     }
 
-    pub async fn init_user(&self) -> Result<(), UserError> { Ok(()) }
+    pub async fn init_user(&self) -> Result<(), FlowyError> { Ok(()) }
 
-    pub async fn check_user(&self) -> Result<UserProfile, UserError> {
+    pub async fn check_user(&self) -> Result<UserProfile, FlowyError> {
         let (user_id, token) = self.get_session()?.into_part();
 
         let user = dsl::user_table
@@ -158,7 +157,7 @@ impl UserSession {
         Ok(user.into())
     }
 
-    pub async fn user_profile(&self) -> Result<UserProfile, UserError> {
+    pub async fn user_profile(&self) -> Result<UserProfile, FlowyError> {
         let (user_id, token) = self.get_session()?.into_part();
         let user = dsl::user_table
             .filter(user_table::id.eq(&user_id))
@@ -168,20 +167,20 @@ impl UserSession {
         Ok(user.into())
     }
 
-    pub fn user_dir(&self) -> Result<String, UserError> {
+    pub fn user_dir(&self) -> Result<String, FlowyError> {
         let session = self.get_session()?;
         Ok(format!("{}/{}", self.config.root_dir, session.user_id))
     }
 
-    pub fn user_id(&self) -> Result<String, UserError> { Ok(self.get_session()?.user_id) }
+    pub fn user_id(&self) -> Result<String, FlowyError> { Ok(self.get_session()?.user_id) }
 
-    pub fn user_name(&self) -> Result<String, UserError> { Ok(self.get_session()?.name) }
+    pub fn user_name(&self) -> Result<String, FlowyError> { Ok(self.get_session()?.name) }
 
-    pub fn token(&self) -> Result<String, UserError> { Ok(self.get_session()?.token) }
+    pub fn token(&self) -> Result<String, FlowyError> { Ok(self.get_session()?.token) }
 }
 
 impl UserSession {
-    fn read_user_profile_on_server(&self, token: &str) -> Result<(), UserError> {
+    fn read_user_profile_on_server(&self, token: &str) -> Result<(), FlowyError> {
         let server = self.server.clone();
         let token = token.to_owned();
         tokio::spawn(async move {
@@ -201,7 +200,7 @@ impl UserSession {
         Ok(())
     }
 
-    async fn update_user_on_server(&self, token: &str, params: UpdateUserParams) -> Result<(), UserError> {
+    async fn update_user_on_server(&self, token: &str, params: UpdateUserParams) -> Result<(), FlowyError> {
         let server = self.server.clone();
         let token = token.to_owned();
         let _ = tokio::spawn(async move {
@@ -217,7 +216,7 @@ impl UserSession {
         Ok(())
     }
 
-    async fn sign_out_on_server(&self, token: &str) -> Result<(), UserError> {
+    async fn sign_out_on_server(&self, token: &str) -> Result<(), FlowyError> {
         let server = self.server.clone();
         let token = token.to_owned();
         let _ = tokio::spawn(async move {
@@ -230,7 +229,7 @@ impl UserSession {
         Ok(())
     }
 
-    async fn save_user(&self, user: UserTable) -> Result<UserTable, UserError> {
+    async fn save_user(&self, user: UserTable) -> Result<UserTable, FlowyError> {
         let conn = self.db_connection()?;
         let _ = diesel::insert_into(user_table::table)
             .values(user.clone())
@@ -238,19 +237,17 @@ impl UserSession {
         Ok(user)
     }
 
-    fn set_session(&self, session: Option<Session>) -> Result<(), UserError> {
+    fn set_session(&self, session: Option<Session>) -> Result<(), FlowyError> {
         tracing::debug!("Set user session: {:?}", session);
         match &session {
-            None => {
-                KV::remove(&self.config.session_cache_key).map_err(|e| UserError::new(ErrorCode::InternalError, &e))?
-            },
+            None => KV::remove(&self.config.session_cache_key).map_err(|e| FlowyError::new(ErrorCode::Internal, &e))?,
             Some(session) => KV::set_str(&self.config.session_cache_key, session.clone().into()),
         }
         *self.session.write() = session;
         Ok(())
     }
 
-    fn get_session(&self) -> Result<Session, UserError> {
+    fn get_session(&self) -> Result<Session, FlowyError> {
         let mut session = { (*self.session.read()).clone() };
         if session.is_none() {
             match KV::get_str(&self.config.session_cache_key) {
@@ -263,7 +260,7 @@ impl UserSession {
         }
 
         match session {
-            None => Err(UserError::unauthorized()),
+            None => Err(FlowyError::unauthorized()),
             Some(session) => Ok(session),
         }
     }
@@ -280,7 +277,7 @@ pub async fn update_user(
     _server: Server,
     pool: Arc<ConnectionPool>,
     params: UpdateUserParams,
-) -> Result<(), UserError> {
+) -> Result<(), FlowyError> {
     let changeset = UserTableChangeset::new(params);
     let conn = pool.get()?;
     diesel_update_table!(user_table, changeset, &*conn);
diff --git a/shared-lib/Cargo.lock b/shared-lib/Cargo.lock
index 9c0c172f00..b840c8332f 100644
--- a/shared-lib/Cargo.lock
+++ b/shared-lib/Cargo.lock
@@ -633,6 +633,15 @@ dependencies = [
  "backtrace",
 ]
 
+[[package]]
+name = "error-code"
+version = "0.1.0"
+dependencies = [
+ "derive_more",
+ "flowy-derive",
+ "protobuf",
+]
+
 [[package]]
 name = "fake"
 version = "2.3.0"
@@ -710,6 +719,7 @@ dependencies = [
  "bytes",
  "chrono",
  "derive_more",
+ "error-code",
  "flowy-collaboration",
  "flowy-derive",
  "log",
@@ -740,6 +750,7 @@ dependencies = [
  "bytes",
  "claim",
  "derive_more",
+ "error-code",
  "fake",
  "fancy-regex",
  "flowy-derive",
diff --git a/shared-lib/Cargo.toml b/shared-lib/Cargo.toml
index d48aa6532e..c923acbfb2 100644
--- a/shared-lib/Cargo.toml
+++ b/shared-lib/Cargo.toml
@@ -10,6 +10,7 @@ members = [
   "backend-service",
   "flowy-derive",
   "flowy-ast",
+  "error-code",
 ]
 
 [profile.dev]
diff --git a/shared-lib/error-code/Cargo.toml b/shared-lib/error-code/Cargo.toml
new file mode 100644
index 0000000000..5688c869ee
--- /dev/null
+++ b/shared-lib/error-code/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "error-code"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+flowy-derive = { path = "../flowy-derive" }
+protobuf = {version = "2.18.0"}
+derive_more = {version = "0.99", features = ["display"]}
\ No newline at end of file
diff --git a/shared-lib/error-code/Flowy.toml b/shared-lib/error-code/Flowy.toml
new file mode 100644
index 0000000000..1c788f7599
--- /dev/null
+++ b/shared-lib/error-code/Flowy.toml
@@ -0,0 +1,3 @@
+
+proto_crates = ["src/error_code.rs"]
+event_files = []
\ No newline at end of file
diff --git a/shared-lib/error-code/src/error_code.rs b/shared-lib/error-code/src/error_code.rs
new file mode 100644
index 0000000000..2868a5fa7c
--- /dev/null
+++ b/shared-lib/error-code/src/error_code.rs
@@ -0,0 +1,100 @@
+use crate::protobuf::ErrorCode as ProtoBufErrorCode;
+use derive_more::Display;
+use flowy_derive::ProtoBuf_Enum;
+use protobuf::ProtobufEnum;
+use std::convert::{TryFrom, TryInto};
+
+#[derive(Debug, Clone, ProtoBuf_Enum, Display, PartialEq, Eq)]
+pub enum ErrorCode {
+    #[display(fmt = "Internal error")]
+    Internal             = 0,
+
+    #[display(fmt = "UserUnauthorized")]
+    UserUnauthorized     = 2,
+
+    #[display(fmt = "RecordNotFound")]
+    RecordNotFound       = 3,
+
+    #[display(fmt = "Workspace name can not be empty or whitespace")]
+    WorkspaceNameInvalid = 100,
+
+    #[display(fmt = "Workspace id can not be empty or whitespace")]
+    WorkspaceIdInvalid   = 101,
+
+    #[display(fmt = "Color style of the App is invalid")]
+    AppColorStyleInvalid = 102,
+
+    #[display(fmt = "Workspace desc is invalid")]
+    WorkspaceDescTooLong = 103,
+
+    #[display(fmt = "Workspace description too long")]
+    WorkspaceNameTooLong = 104,
+
+    #[display(fmt = "App id can not be empty or whitespace")]
+    AppIdInvalid         = 110,
+
+    #[display(fmt = "App name can not be empty or whitespace")]
+    AppNameInvalid       = 111,
+
+    #[display(fmt = "View name can not be empty or whitespace")]
+    ViewNameInvalid      = 120,
+
+    #[display(fmt = "Thumbnail of the view is invalid")]
+    ViewThumbnailInvalid = 121,
+
+    #[display(fmt = "View id can not be empty or whitespace")]
+    ViewIdInvalid        = 122,
+
+    #[display(fmt = "View desc too long")]
+    ViewDescTooLong      = 123,
+
+    #[display(fmt = "View data is invalid")]
+    ViewDataInvalid      = 124,
+
+    #[display(fmt = "View name too long")]
+    ViewNameTooLong      = 125,
+
+    #[display(fmt = "Connection error")]
+    ConnectError         = 200,
+
+    #[display(fmt = "Email can not be empty or whitespace")]
+    EmailIsEmpty         = 300,
+    #[display(fmt = "Email format is not valid")]
+    EmailFormatInvalid   = 301,
+    #[display(fmt = "Email already exists")]
+    EmailAlreadyExists   = 302,
+    #[display(fmt = "Password can not be empty or whitespace")]
+    PasswordIsEmpty      = 303,
+    #[display(fmt = "Password format too long")]
+    PasswordTooLong      = 304,
+    #[display(fmt = "Password contains forbidden characters.")]
+    PasswordContainsForbidCharacters = 305,
+    #[display(fmt = "Password should contain a minimum of 6 characters with 1 special 1 letter and 1 numeric")]
+    PasswordFormatInvalid = 306,
+    #[display(fmt = "Password not match")]
+    PasswordNotMatch     = 307,
+    #[display(fmt = "User name is too long")]
+    UserNameTooLong      = 308,
+    #[display(fmt = "User name contain forbidden characters")]
+    UserNameContainForbiddenCharacters = 309,
+    #[display(fmt = "User name can not be empty or whitespace")]
+    UserNameIsEmpty      = 310,
+    #[display(fmt = "user id is empty or whitespace")]
+    UserIdInvalid        = 311,
+    #[display(fmt = "User not exist")]
+    UserNotExist         = 312,
+}
+
+impl ErrorCode {
+    pub fn value(&self) -> i32 {
+        let code: ProtoBufErrorCode = self.clone().try_into().unwrap();
+        code.value()
+    }
+
+    pub fn from_i32(value: i32) -> Self {
+        match ProtoBufErrorCode::from_i32(value) {
+            None => ErrorCode::Internal,
+            Some(code) => ErrorCode::try_from(&code).unwrap(),
+        }
+    }
+}
diff --git a/shared-lib/error-code/src/lib.rs b/shared-lib/error-code/src/lib.rs
new file mode 100644
index 0000000000..90a67f9c77
--- /dev/null
+++ b/shared-lib/error-code/src/lib.rs
@@ -0,0 +1,4 @@
+mod error_code;
+mod protobuf;
+
+pub use error_code::*;
diff --git a/shared-lib/error-code/src/protobuf/mod.rs b/shared-lib/error-code/src/protobuf/mod.rs
new file mode 100644
index 0000000000..da97aad28a
--- /dev/null
+++ b/shared-lib/error-code/src/protobuf/mod.rs
@@ -0,0 +1,4 @@
+#![cfg_attr(rustfmt, rustfmt::skip)]
+// Auto-generated, do not edit
+mod model;
+pub use model::*;
\ No newline at end of file
diff --git a/shared-lib/error-code/src/protobuf/model/error_code.rs b/shared-lib/error-code/src/protobuf/model/error_code.rs
new file mode 100644
index 0000000000..0fe3afbf55
--- /dev/null
+++ b/shared-lib/error-code/src/protobuf/model/error_code.rs
@@ -0,0 +1,253 @@
+// This file is generated by rust-protobuf 2.22.1. Do not edit
+// @generated
+
+// https://github.com/rust-lang/rust-clippy/issues/702
+#![allow(unknown_lints)]
+#![allow(clippy::all)]
+
+#![allow(unused_attributes)]
+#![cfg_attr(rustfmt, rustfmt::skip)]
+
+#![allow(box_pointers)]
+#![allow(dead_code)]
+#![allow(missing_docs)]
+#![allow(non_camel_case_types)]
+#![allow(non_snake_case)]
+#![allow(non_upper_case_globals)]
+#![allow(trivial_casts)]
+#![allow(unused_imports)]
+#![allow(unused_results)]
+//! Generated file from `error_code.proto`
+
+/// Generated files are compatible only with the same version
+/// of protobuf runtime.
+// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_22_1;
+
+#[derive(Clone,PartialEq,Eq,Debug,Hash)]
+pub enum ErrorCode {
+    Internal = 0,
+    UserUnauthorized = 2,
+    RecordNotFound = 3,
+    WorkspaceNameInvalid = 100,
+    WorkspaceIdInvalid = 101,
+    AppColorStyleInvalid = 102,
+    WorkspaceDescTooLong = 103,
+    WorkspaceNameTooLong = 104,
+    AppIdInvalid = 110,
+    AppNameInvalid = 111,
+    ViewNameInvalid = 120,
+    ViewThumbnailInvalid = 121,
+    ViewIdInvalid = 122,
+    ViewDescTooLong = 123,
+    ViewDataInvalid = 124,
+    ViewNameTooLong = 125,
+    ConnectError = 200,
+    EmailIsEmpty = 300,
+    EmailFormatInvalid = 301,
+    EmailAlreadyExists = 302,
+    PasswordIsEmpty = 303,
+    PasswordTooLong = 304,
+    PasswordContainsForbidCharacters = 305,
+    PasswordFormatInvalid = 306,
+    PasswordNotMatch = 307,
+    UserNameTooLong = 308,
+    UserNameContainForbiddenCharacters = 309,
+    UserNameIsEmpty = 310,
+    UserIdInvalid = 311,
+    UserNotExist = 312,
+}
+
+impl ::protobuf::ProtobufEnum for ErrorCode {
+    fn value(&self) -> i32 {
+        *self as i32
+    }
+
+    fn from_i32(value: i32) -> ::std::option::Option<ErrorCode> {
+        match value {
+            0 => ::std::option::Option::Some(ErrorCode::Internal),
+            2 => ::std::option::Option::Some(ErrorCode::UserUnauthorized),
+            3 => ::std::option::Option::Some(ErrorCode::RecordNotFound),
+            100 => ::std::option::Option::Some(ErrorCode::WorkspaceNameInvalid),
+            101 => ::std::option::Option::Some(ErrorCode::WorkspaceIdInvalid),
+            102 => ::std::option::Option::Some(ErrorCode::AppColorStyleInvalid),
+            103 => ::std::option::Option::Some(ErrorCode::WorkspaceDescTooLong),
+            104 => ::std::option::Option::Some(ErrorCode::WorkspaceNameTooLong),
+            110 => ::std::option::Option::Some(ErrorCode::AppIdInvalid),
+            111 => ::std::option::Option::Some(ErrorCode::AppNameInvalid),
+            120 => ::std::option::Option::Some(ErrorCode::ViewNameInvalid),
+            121 => ::std::option::Option::Some(ErrorCode::ViewThumbnailInvalid),
+            122 => ::std::option::Option::Some(ErrorCode::ViewIdInvalid),
+            123 => ::std::option::Option::Some(ErrorCode::ViewDescTooLong),
+            124 => ::std::option::Option::Some(ErrorCode::ViewDataInvalid),
+            125 => ::std::option::Option::Some(ErrorCode::ViewNameTooLong),
+            200 => ::std::option::Option::Some(ErrorCode::ConnectError),
+            300 => ::std::option::Option::Some(ErrorCode::EmailIsEmpty),
+            301 => ::std::option::Option::Some(ErrorCode::EmailFormatInvalid),
+            302 => ::std::option::Option::Some(ErrorCode::EmailAlreadyExists),
+            303 => ::std::option::Option::Some(ErrorCode::PasswordIsEmpty),
+            304 => ::std::option::Option::Some(ErrorCode::PasswordTooLong),
+            305 => ::std::option::Option::Some(ErrorCode::PasswordContainsForbidCharacters),
+            306 => ::std::option::Option::Some(ErrorCode::PasswordFormatInvalid),
+            307 => ::std::option::Option::Some(ErrorCode::PasswordNotMatch),
+            308 => ::std::option::Option::Some(ErrorCode::UserNameTooLong),
+            309 => ::std::option::Option::Some(ErrorCode::UserNameContainForbiddenCharacters),
+            310 => ::std::option::Option::Some(ErrorCode::UserNameIsEmpty),
+            311 => ::std::option::Option::Some(ErrorCode::UserIdInvalid),
+            312 => ::std::option::Option::Some(ErrorCode::UserNotExist),
+            _ => ::std::option::Option::None
+        }
+    }
+
+    fn values() -> &'static [Self] {
+        static values: &'static [ErrorCode] = &[
+            ErrorCode::Internal,
+            ErrorCode::UserUnauthorized,
+            ErrorCode::RecordNotFound,
+            ErrorCode::WorkspaceNameInvalid,
+            ErrorCode::WorkspaceIdInvalid,
+            ErrorCode::AppColorStyleInvalid,
+            ErrorCode::WorkspaceDescTooLong,
+            ErrorCode::WorkspaceNameTooLong,
+            ErrorCode::AppIdInvalid,
+            ErrorCode::AppNameInvalid,
+            ErrorCode::ViewNameInvalid,
+            ErrorCode::ViewThumbnailInvalid,
+            ErrorCode::ViewIdInvalid,
+            ErrorCode::ViewDescTooLong,
+            ErrorCode::ViewDataInvalid,
+            ErrorCode::ViewNameTooLong,
+            ErrorCode::ConnectError,
+            ErrorCode::EmailIsEmpty,
+            ErrorCode::EmailFormatInvalid,
+            ErrorCode::EmailAlreadyExists,
+            ErrorCode::PasswordIsEmpty,
+            ErrorCode::PasswordTooLong,
+            ErrorCode::PasswordContainsForbidCharacters,
+            ErrorCode::PasswordFormatInvalid,
+            ErrorCode::PasswordNotMatch,
+            ErrorCode::UserNameTooLong,
+            ErrorCode::UserNameContainForbiddenCharacters,
+            ErrorCode::UserNameIsEmpty,
+            ErrorCode::UserIdInvalid,
+            ErrorCode::UserNotExist,
+        ];
+        values
+    }
+
+    fn enum_descriptor_static() -> &'static ::protobuf::reflect::EnumDescriptor {
+        static descriptor: ::protobuf::rt::LazyV2<::protobuf::reflect::EnumDescriptor> = ::protobuf::rt::LazyV2::INIT;
+        descriptor.get(|| {
+            ::protobuf::reflect::EnumDescriptor::new_pb_name::<ErrorCode>("ErrorCode", file_descriptor_proto())
+        })
+    }
+}
+
+impl ::std::marker::Copy for ErrorCode {
+}
+
+impl ::std::default::Default for ErrorCode {
+    fn default() -> Self {
+        ErrorCode::Internal
+    }
+}
+
+impl ::protobuf::reflect::ProtobufValue for ErrorCode {
+    fn as_ref(&self) -> ::protobuf::reflect::ReflectValueRef {
+        ::protobuf::reflect::ReflectValueRef::Enum(::protobuf::ProtobufEnum::descriptor(self))
+    }
+}
+
+static file_descriptor_proto_data: &'static [u8] = b"\
+    \n\x10error_code.proto*\xc4\x05\n\tErrorCode\x12\x0c\n\x08Internal\x10\0\
+    \x12\x14\n\x10UserUnauthorized\x10\x02\x12\x12\n\x0eRecordNotFound\x10\
+    \x03\x12\x18\n\x14WorkspaceNameInvalid\x10d\x12\x16\n\x12WorkspaceIdInva\
+    lid\x10e\x12\x18\n\x14AppColorStyleInvalid\x10f\x12\x18\n\x14WorkspaceDe\
+    scTooLong\x10g\x12\x18\n\x14WorkspaceNameTooLong\x10h\x12\x10\n\x0cAppId\
+    Invalid\x10n\x12\x12\n\x0eAppNameInvalid\x10o\x12\x13\n\x0fViewNameInval\
+    id\x10x\x12\x18\n\x14ViewThumbnailInvalid\x10y\x12\x11\n\rViewIdInvalid\
+    \x10z\x12\x13\n\x0fViewDescTooLong\x10{\x12\x13\n\x0fViewDataInvalid\x10\
+    |\x12\x13\n\x0fViewNameTooLong\x10}\x12\x11\n\x0cConnectError\x10\xc8\
+    \x01\x12\x11\n\x0cEmailIsEmpty\x10\xac\x02\x12\x17\n\x12EmailFormatInval\
+    id\x10\xad\x02\x12\x17\n\x12EmailAlreadyExists\x10\xae\x02\x12\x14\n\x0f\
+    PasswordIsEmpty\x10\xaf\x02\x12\x14\n\x0fPasswordTooLong\x10\xb0\x02\x12\
+    %\n\x20PasswordContainsForbidCharacters\x10\xb1\x02\x12\x1a\n\x15Passwor\
+    dFormatInvalid\x10\xb2\x02\x12\x15\n\x10PasswordNotMatch\x10\xb3\x02\x12\
+    \x14\n\x0fUserNameTooLong\x10\xb4\x02\x12'\n\"UserNameContainForbiddenCh\
+    aracters\x10\xb5\x02\x12\x14\n\x0fUserNameIsEmpty\x10\xb6\x02\x12\x12\n\
+    \rUserIdInvalid\x10\xb7\x02\x12\x11\n\x0cUserNotExist\x10\xb8\x02J\xf8\t\
+    \n\x06\x12\x04\0\0!\x01\n\x08\n\x01\x0c\x12\x03\0\0\x12\n\n\n\x02\x05\0\
+    \x12\x04\x02\0!\x01\n\n\n\x03\x05\0\x01\x12\x03\x02\x05\x0e\n\x0b\n\x04\
+    \x05\0\x02\0\x12\x03\x03\x04\x11\n\x0c\n\x05\x05\0\x02\0\x01\x12\x03\x03\
+    \x04\x0c\n\x0c\n\x05\x05\0\x02\0\x02\x12\x03\x03\x0f\x10\n\x0b\n\x04\x05\
+    \0\x02\x01\x12\x03\x04\x04\x19\n\x0c\n\x05\x05\0\x02\x01\x01\x12\x03\x04\
+    \x04\x14\n\x0c\n\x05\x05\0\x02\x01\x02\x12\x03\x04\x17\x18\n\x0b\n\x04\
+    \x05\0\x02\x02\x12\x03\x05\x04\x17\n\x0c\n\x05\x05\0\x02\x02\x01\x12\x03\
+    \x05\x04\x12\n\x0c\n\x05\x05\0\x02\x02\x02\x12\x03\x05\x15\x16\n\x0b\n\
+    \x04\x05\0\x02\x03\x12\x03\x06\x04\x1f\n\x0c\n\x05\x05\0\x02\x03\x01\x12\
+    \x03\x06\x04\x18\n\x0c\n\x05\x05\0\x02\x03\x02\x12\x03\x06\x1b\x1e\n\x0b\
+    \n\x04\x05\0\x02\x04\x12\x03\x07\x04\x1d\n\x0c\n\x05\x05\0\x02\x04\x01\
+    \x12\x03\x07\x04\x16\n\x0c\n\x05\x05\0\x02\x04\x02\x12\x03\x07\x19\x1c\n\
+    \x0b\n\x04\x05\0\x02\x05\x12\x03\x08\x04\x1f\n\x0c\n\x05\x05\0\x02\x05\
+    \x01\x12\x03\x08\x04\x18\n\x0c\n\x05\x05\0\x02\x05\x02\x12\x03\x08\x1b\
+    \x1e\n\x0b\n\x04\x05\0\x02\x06\x12\x03\t\x04\x1f\n\x0c\n\x05\x05\0\x02\
+    \x06\x01\x12\x03\t\x04\x18\n\x0c\n\x05\x05\0\x02\x06\x02\x12\x03\t\x1b\
+    \x1e\n\x0b\n\x04\x05\0\x02\x07\x12\x03\n\x04\x1f\n\x0c\n\x05\x05\0\x02\
+    \x07\x01\x12\x03\n\x04\x18\n\x0c\n\x05\x05\0\x02\x07\x02\x12\x03\n\x1b\
+    \x1e\n\x0b\n\x04\x05\0\x02\x08\x12\x03\x0b\x04\x17\n\x0c\n\x05\x05\0\x02\
+    \x08\x01\x12\x03\x0b\x04\x10\n\x0c\n\x05\x05\0\x02\x08\x02\x12\x03\x0b\
+    \x13\x16\n\x0b\n\x04\x05\0\x02\t\x12\x03\x0c\x04\x19\n\x0c\n\x05\x05\0\
+    \x02\t\x01\x12\x03\x0c\x04\x12\n\x0c\n\x05\x05\0\x02\t\x02\x12\x03\x0c\
+    \x15\x18\n\x0b\n\x04\x05\0\x02\n\x12\x03\r\x04\x1a\n\x0c\n\x05\x05\0\x02\
+    \n\x01\x12\x03\r\x04\x13\n\x0c\n\x05\x05\0\x02\n\x02\x12\x03\r\x16\x19\n\
+    \x0b\n\x04\x05\0\x02\x0b\x12\x03\x0e\x04\x1f\n\x0c\n\x05\x05\0\x02\x0b\
+    \x01\x12\x03\x0e\x04\x18\n\x0c\n\x05\x05\0\x02\x0b\x02\x12\x03\x0e\x1b\
+    \x1e\n\x0b\n\x04\x05\0\x02\x0c\x12\x03\x0f\x04\x18\n\x0c\n\x05\x05\0\x02\
+    \x0c\x01\x12\x03\x0f\x04\x11\n\x0c\n\x05\x05\0\x02\x0c\x02\x12\x03\x0f\
+    \x14\x17\n\x0b\n\x04\x05\0\x02\r\x12\x03\x10\x04\x1a\n\x0c\n\x05\x05\0\
+    \x02\r\x01\x12\x03\x10\x04\x13\n\x0c\n\x05\x05\0\x02\r\x02\x12\x03\x10\
+    \x16\x19\n\x0b\n\x04\x05\0\x02\x0e\x12\x03\x11\x04\x1a\n\x0c\n\x05\x05\0\
+    \x02\x0e\x01\x12\x03\x11\x04\x13\n\x0c\n\x05\x05\0\x02\x0e\x02\x12\x03\
+    \x11\x16\x19\n\x0b\n\x04\x05\0\x02\x0f\x12\x03\x12\x04\x1a\n\x0c\n\x05\
+    \x05\0\x02\x0f\x01\x12\x03\x12\x04\x13\n\x0c\n\x05\x05\0\x02\x0f\x02\x12\
+    \x03\x12\x16\x19\n\x0b\n\x04\x05\0\x02\x10\x12\x03\x13\x04\x17\n\x0c\n\
+    \x05\x05\0\x02\x10\x01\x12\x03\x13\x04\x10\n\x0c\n\x05\x05\0\x02\x10\x02\
+    \x12\x03\x13\x13\x16\n\x0b\n\x04\x05\0\x02\x11\x12\x03\x14\x04\x17\n\x0c\
+    \n\x05\x05\0\x02\x11\x01\x12\x03\x14\x04\x10\n\x0c\n\x05\x05\0\x02\x11\
+    \x02\x12\x03\x14\x13\x16\n\x0b\n\x04\x05\0\x02\x12\x12\x03\x15\x04\x1d\n\
+    \x0c\n\x05\x05\0\x02\x12\x01\x12\x03\x15\x04\x16\n\x0c\n\x05\x05\0\x02\
+    \x12\x02\x12\x03\x15\x19\x1c\n\x0b\n\x04\x05\0\x02\x13\x12\x03\x16\x04\
+    \x1d\n\x0c\n\x05\x05\0\x02\x13\x01\x12\x03\x16\x04\x16\n\x0c\n\x05\x05\0\
+    \x02\x13\x02\x12\x03\x16\x19\x1c\n\x0b\n\x04\x05\0\x02\x14\x12\x03\x17\
+    \x04\x1a\n\x0c\n\x05\x05\0\x02\x14\x01\x12\x03\x17\x04\x13\n\x0c\n\x05\
+    \x05\0\x02\x14\x02\x12\x03\x17\x16\x19\n\x0b\n\x04\x05\0\x02\x15\x12\x03\
+    \x18\x04\x1a\n\x0c\n\x05\x05\0\x02\x15\x01\x12\x03\x18\x04\x13\n\x0c\n\
+    \x05\x05\0\x02\x15\x02\x12\x03\x18\x16\x19\n\x0b\n\x04\x05\0\x02\x16\x12\
+    \x03\x19\x04+\n\x0c\n\x05\x05\0\x02\x16\x01\x12\x03\x19\x04$\n\x0c\n\x05\
+    \x05\0\x02\x16\x02\x12\x03\x19'*\n\x0b\n\x04\x05\0\x02\x17\x12\x03\x1a\
+    \x04\x20\n\x0c\n\x05\x05\0\x02\x17\x01\x12\x03\x1a\x04\x19\n\x0c\n\x05\
+    \x05\0\x02\x17\x02\x12\x03\x1a\x1c\x1f\n\x0b\n\x04\x05\0\x02\x18\x12\x03\
+    \x1b\x04\x1b\n\x0c\n\x05\x05\0\x02\x18\x01\x12\x03\x1b\x04\x14\n\x0c\n\
+    \x05\x05\0\x02\x18\x02\x12\x03\x1b\x17\x1a\n\x0b\n\x04\x05\0\x02\x19\x12\
+    \x03\x1c\x04\x1a\n\x0c\n\x05\x05\0\x02\x19\x01\x12\x03\x1c\x04\x13\n\x0c\
+    \n\x05\x05\0\x02\x19\x02\x12\x03\x1c\x16\x19\n\x0b\n\x04\x05\0\x02\x1a\
+    \x12\x03\x1d\x04-\n\x0c\n\x05\x05\0\x02\x1a\x01\x12\x03\x1d\x04&\n\x0c\n\
+    \x05\x05\0\x02\x1a\x02\x12\x03\x1d),\n\x0b\n\x04\x05\0\x02\x1b\x12\x03\
+    \x1e\x04\x1a\n\x0c\n\x05\x05\0\x02\x1b\x01\x12\x03\x1e\x04\x13\n\x0c\n\
+    \x05\x05\0\x02\x1b\x02\x12\x03\x1e\x16\x19\n\x0b\n\x04\x05\0\x02\x1c\x12\
+    \x03\x1f\x04\x18\n\x0c\n\x05\x05\0\x02\x1c\x01\x12\x03\x1f\x04\x11\n\x0c\
+    \n\x05\x05\0\x02\x1c\x02\x12\x03\x1f\x14\x17\n\x0b\n\x04\x05\0\x02\x1d\
+    \x12\x03\x20\x04\x17\n\x0c\n\x05\x05\0\x02\x1d\x01\x12\x03\x20\x04\x10\n\
+    \x0c\n\x05\x05\0\x02\x1d\x02\x12\x03\x20\x13\x16b\x06proto3\
+";
+
+static file_descriptor_proto_lazy: ::protobuf::rt::LazyV2<::protobuf::descriptor::FileDescriptorProto> = ::protobuf::rt::LazyV2::INIT;
+
+fn parse_descriptor_proto() -> ::protobuf::descriptor::FileDescriptorProto {
+    ::protobuf::Message::parse_from_bytes(file_descriptor_proto_data).unwrap()
+}
+
+pub fn file_descriptor_proto() -> &'static ::protobuf::descriptor::FileDescriptorProto {
+    file_descriptor_proto_lazy.get(|| {
+        parse_descriptor_proto()
+    })
+}
diff --git a/shared-lib/error-code/src/protobuf/model/mod.rs b/shared-lib/error-code/src/protobuf/model/mod.rs
new file mode 100644
index 0000000000..e6c7f34086
--- /dev/null
+++ b/shared-lib/error-code/src/protobuf/model/mod.rs
@@ -0,0 +1,5 @@
+#![cfg_attr(rustfmt, rustfmt::skip)]
+// Auto-generated, do not edit
+
+mod error_code;
+pub use error_code::*;
diff --git a/shared-lib/error-code/src/protobuf/proto/error_code.proto b/shared-lib/error-code/src/protobuf/proto/error_code.proto
new file mode 100644
index 0000000000..ed12d58848
--- /dev/null
+++ b/shared-lib/error-code/src/protobuf/proto/error_code.proto
@@ -0,0 +1,34 @@
+syntax = "proto3";
+
+enum ErrorCode {
+    Internal = 0;
+    UserUnauthorized = 2;
+    RecordNotFound = 3;
+    WorkspaceNameInvalid = 100;
+    WorkspaceIdInvalid = 101;
+    AppColorStyleInvalid = 102;
+    WorkspaceDescTooLong = 103;
+    WorkspaceNameTooLong = 104;
+    AppIdInvalid = 110;
+    AppNameInvalid = 111;
+    ViewNameInvalid = 120;
+    ViewThumbnailInvalid = 121;
+    ViewIdInvalid = 122;
+    ViewDescTooLong = 123;
+    ViewDataInvalid = 124;
+    ViewNameTooLong = 125;
+    ConnectError = 200;
+    EmailIsEmpty = 300;
+    EmailFormatInvalid = 301;
+    EmailAlreadyExists = 302;
+    PasswordIsEmpty = 303;
+    PasswordTooLong = 304;
+    PasswordContainsForbidCharacters = 305;
+    PasswordFormatInvalid = 306;
+    PasswordNotMatch = 307;
+    UserNameTooLong = 308;
+    UserNameContainForbiddenCharacters = 309;
+    UserNameIsEmpty = 310;
+    UserIdInvalid = 311;
+    UserNotExist = 312;
+}
diff --git a/shared-lib/flowy-core-infra/Cargo.toml b/shared-lib/flowy-core-infra/Cargo.toml
index 28898dabf7..e3420abe0a 100644
--- a/shared-lib/flowy-core-infra/Cargo.toml
+++ b/shared-lib/flowy-core-infra/Cargo.toml
@@ -17,6 +17,7 @@ log = "0.4.14"
 flowy-collaboration = { path = "../flowy-collaboration" }
 uuid = { version = "0.8", features = ["serde", "v4"] }
 chrono = { version = "0.4" }
+error-code = { path = "../error-code" }
 
 [features]
 default = []
diff --git a/shared-lib/flowy-core-infra/Flowy.toml b/shared-lib/flowy-core-infra/Flowy.toml
index d1411c4d2b..5e88aadda5 100644
--- a/shared-lib/flowy-core-infra/Flowy.toml
+++ b/shared-lib/flowy-core-infra/Flowy.toml
@@ -1,3 +1,3 @@
 
-proto_crates = ["src/entities", "src/errors.rs"]
+proto_crates = ["src/entities",]
 event_files = []
\ No newline at end of file
diff --git a/shared-lib/flowy-core-infra/src/entities/view/view_update.rs b/shared-lib/flowy-core-infra/src/entities/view/view_update.rs
index 7205f6c39c..5a3b10df93 100644
--- a/shared-lib/flowy-core-infra/src/entities/view/view_update.rs
+++ b/shared-lib/flowy-core-infra/src/entities/view/view_update.rs
@@ -93,11 +93,11 @@ impl TryInto<UpdateViewParams> for UpdateViewRequest {
 // }
 //
 // impl TryInto<DocDelta> for DocDeltaRequest {
-//     type Error = WorkspaceError;
+//     type Error = FlowyError;
 //
 //     fn try_into(self) -> Result<DocDelta, Self::Error> {
 //         let view_id = ViewId::parse(self.view_id)
-//             .map_err(|e| WorkspaceError::view_id().context(e))?
+//             .map_err(|e| FlowyError::view_id().context(e))?
 //             .0;
 //
 //         Ok(DocDelta { doc_id: view_id, data: self.data })
diff --git a/shared-lib/flowy-core-infra/src/errors.rs b/shared-lib/flowy-core-infra/src/errors.rs
deleted file mode 100644
index a9a07a99a6..0000000000
--- a/shared-lib/flowy-core-infra/src/errors.rs
+++ /dev/null
@@ -1,77 +0,0 @@
-use crate::protobuf::ErrorCode as ProtoBufErrorCode;
-
-use derive_more::Display;
-use flowy_derive::ProtoBuf_Enum;
-use protobuf::ProtobufEnum;
-use std::convert::{TryFrom, TryInto};
-
-#[derive(Debug, Clone, ProtoBuf_Enum, Display, PartialEq, Eq)]
-pub enum ErrorCode {
-    #[display(fmt = "Workspace name can not be empty or whitespace")]
-    WorkspaceNameInvalid = 0,
-
-    #[display(fmt = "Workspace id can not be empty or whitespace")]
-    WorkspaceIdInvalid   = 1,
-
-    #[display(fmt = "Color style of the App is invalid")]
-    AppColorStyleInvalid = 2,
-
-    #[display(fmt = "Workspace desc is invalid")]
-    WorkspaceDescTooLong = 3,
-
-    #[display(fmt = "Workspace description too long")]
-    WorkspaceNameTooLong = 4,
-
-    #[display(fmt = "App id can not be empty or whitespace")]
-    AppIdInvalid         = 10,
-
-    #[display(fmt = "App name can not be empty or whitespace")]
-    AppNameInvalid       = 11,
-
-    #[display(fmt = "View name can not be empty or whitespace")]
-    ViewNameInvalid      = 20,
-
-    #[display(fmt = "Thumbnail of the view is invalid")]
-    ViewThumbnailInvalid = 21,
-
-    #[display(fmt = "View id can not be empty or whitespace")]
-    ViewIdInvalid        = 22,
-
-    #[display(fmt = "View desc too long")]
-    ViewDescTooLong      = 23,
-
-    #[display(fmt = "View data is invalid")]
-    ViewDataInvalid      = 24,
-
-    #[display(fmt = "View name too long")]
-    ViewNameTooLong      = 25,
-
-    #[display(fmt = "User unauthorized")]
-    UserUnauthorized     = 100,
-
-    #[display(fmt = "Workspace websocket error")]
-    WsConnectError       = 200,
-
-    #[display(fmt = "Server error")]
-    InternalError        = 1000,
-    #[display(fmt = "Record not found")]
-    RecordNotFound       = 1001,
-}
-
-impl std::default::Default for ErrorCode {
-    fn default() -> Self { ErrorCode::InternalError }
-}
-
-impl ErrorCode {
-    pub fn value(&self) -> i32 {
-        let code: ProtoBufErrorCode = self.clone().try_into().unwrap();
-        code.value()
-    }
-
-    pub fn from_i32(value: i32) -> Self {
-        match ProtoBufErrorCode::from_i32(value) {
-            None => ErrorCode::InternalError,
-            Some(code) => ErrorCode::try_from(&code).unwrap(),
-        }
-    }
-}
diff --git a/shared-lib/flowy-core-infra/src/lib.rs b/shared-lib/flowy-core-infra/src/lib.rs
index 631fdf050b..841c93b8d7 100644
--- a/shared-lib/flowy-core-infra/src/lib.rs
+++ b/shared-lib/flowy-core-infra/src/lib.rs
@@ -1,5 +1,4 @@
 pub mod entities;
-pub mod errors;
 pub mod parser;
 
 #[macro_use]
@@ -8,3 +7,7 @@ mod macros;
 // #[cfg(feature = "backend")]
 pub mod protobuf;
 pub mod user_default;
+
+pub mod errors {
+    pub use error_code::ErrorCode;
+}
diff --git a/shared-lib/flowy-derive/src/derive_cache/derive_cache.rs b/shared-lib/flowy-derive/src/derive_cache/derive_cache.rs
index 57014f3213..3e314e6a7f 100644
--- a/shared-lib/flowy-derive/src/derive_cache/derive_cache.rs
+++ b/shared-lib/flowy-derive/src/derive_cache/derive_cache.rs
@@ -16,14 +16,11 @@ pub fn category_from_str(type_str: &str) -> TypeCategory {
         "HashMap" => TypeCategory::Map,
         "u8" => TypeCategory::Bytes,
         "String" => TypeCategory::Str,
-        "WorkspaceError"
-        | "DocError"
-        | "FFIRequest"
+        "FFIRequest"
         | "FFIResponse"
         | "FlowyError"
         | "SubscribeObject"
         | "NetworkState"
-        | "UserError"
         | "QueryAppRequest"
         | "AppIdentifier"
         | "CreateAppRequest"
@@ -82,7 +79,6 @@ pub fn category_from_str(type_str: &str) -> TypeCategory {
         => TypeCategory::Protobuf,
         "WorkspaceEvent"
         | "WorkspaceNotification"
-        | "ErrorCode"
         | "DocObservable"
         | "FFIStatusCode"
         | "NetworkEvent"
@@ -93,6 +89,7 @@ pub fn category_from_str(type_str: &str) -> TypeCategory {
         | "ViewType"
         | "ExportType"
         | "WsDataType"
+        | "ErrorCode"
         | "WsModule"
         | "RevType"
         | "RevState"
diff --git a/shared-lib/flowy-user-infra/Cargo.toml b/shared-lib/flowy-user-infra/Cargo.toml
index 918516780c..5e0afba7c9 100644
--- a/shared-lib/flowy-user-infra/Cargo.toml
+++ b/shared-lib/flowy-user-infra/Cargo.toml
@@ -7,6 +7,7 @@ edition = "2018"
 
 [dependencies]
 flowy-derive = { path = "../flowy-derive" }
+error-code = { path = "../error-code" }
 protobuf = {version = "2.18.0"}
 bytes = "1.0"
 unicode-segmentation = "1.8"
diff --git a/shared-lib/flowy-user-infra/src/errors.rs b/shared-lib/flowy-user-infra/src/errors.rs
deleted file mode 100644
index 2fe57dc53f..0000000000
--- a/shared-lib/flowy-user-infra/src/errors.rs
+++ /dev/null
@@ -1,61 +0,0 @@
-use crate::protobuf::ErrorCode as ProtoBufErrorCode;
-use derive_more::Display;
-use flowy_derive::ProtoBuf_Enum;
-use protobuf::ProtobufEnum;
-use std::convert::{TryFrom, TryInto};
-
-#[derive(Debug, Clone, ProtoBuf_Enum, Display, PartialEq, Eq)]
-pub enum ErrorCode {
-    #[display(fmt = "Email can not be empty or whitespace")]
-    EmailIsEmpty       = 0,
-    #[display(fmt = "Email format is not valid")]
-    EmailFormatInvalid = 1,
-    #[display(fmt = "Email already exists")]
-    EmailAlreadyExists = 2,
-    #[display(fmt = "Password can not be empty or whitespace")]
-    PasswordIsEmpty    = 10,
-    #[display(fmt = "Password format too long")]
-    PasswordTooLong    = 11,
-    #[display(fmt = "Password contains forbidden characters.")]
-    PasswordContainsForbidCharacters = 12,
-    #[display(fmt = "Password should contain a minimum of 6 characters with 1 special 1 letter and 1 numeric")]
-    PasswordFormatInvalid = 13,
-    #[display(fmt = "Password not match")]
-    PasswordNotMatch   = 14,
-    #[display(fmt = "User name is too long")]
-    UserNameTooLong    = 20,
-    #[display(fmt = "User name contain forbidden characters")]
-    UserNameContainForbiddenCharacters = 21,
-    #[display(fmt = "User name can not be empty or whitespace")]
-    UserNameIsEmpty    = 22,
-    #[display(fmt = "user id is empty or whitespace")]
-    UserIdInvalid      = 23,
-    #[display(fmt = "User token is invalid")]
-    UserUnauthorized   = 24,
-    #[display(fmt = "User not exist")]
-    UserNotExist       = 25,
-
-    #[display(fmt = "Server error")]
-    ServerError        = 99,
-
-    #[display(fmt = "Internal error")]
-    InternalError      = 100,
-}
-
-impl ErrorCode {
-    pub fn value(&self) -> i32 {
-        let code: ProtoBufErrorCode = self.clone().try_into().unwrap();
-        code.value()
-    }
-
-    pub fn from_i32(value: i32) -> Self {
-        match ProtoBufErrorCode::from_i32(value) {
-            None => ErrorCode::InternalError,
-            Some(code) => ErrorCode::try_from(&code).unwrap(),
-        }
-    }
-}
-
-impl std::default::Default for ErrorCode {
-    fn default() -> Self { ErrorCode::InternalError }
-}
diff --git a/shared-lib/flowy-user-infra/src/lib.rs b/shared-lib/flowy-user-infra/src/lib.rs
index 3ee07bd886..706b26a74f 100644
--- a/shared-lib/flowy-user-infra/src/lib.rs
+++ b/shared-lib/flowy-user-infra/src/lib.rs
@@ -1,5 +1,7 @@
 pub mod entities;
-pub mod errors;
 pub mod parser;
 pub mod protobuf;
-pub mod user_default;
+
+pub mod errors {
+    pub use error_code::ErrorCode;
+}
diff --git a/shared-lib/flowy-user-infra/src/user_default.rs b/shared-lib/flowy-user-infra/src/user_default.rs
deleted file mode 100644
index 8b13789179..0000000000
--- a/shared-lib/flowy-user-infra/src/user_default.rs
+++ /dev/null
@@ -1 +0,0 @@
-