diff --git a/frontend/appflowy_flutter/lib/plugins/ai_chat/application/chat_bloc.dart b/frontend/appflowy_flutter/lib/plugins/ai_chat/application/chat_bloc.dart
index 09bf21acaa..f1b6be106a 100644
--- a/frontend/appflowy_flutter/lib/plugins/ai_chat/application/chat_bloc.dart
+++ b/frontend/appflowy_flutter/lib/plugins/ai_chat/application/chat_bloc.dart
@@ -88,7 +88,13 @@ class ChatBloc extends Bloc<ChatEvent, ChatState> {
             Int64? beforeMessageId;
             final oldestMessage = _getOlderstMessage();
             if (oldestMessage != null) {
-              beforeMessageId = Int64.parseInt(oldestMessage.id);
+              try {
+                beforeMessageId = Int64.parseInt(oldestMessage.id);
+              } catch (e) {
+                Log.error(
+                  "Failed to parse message id: $e, messaeg_id: ${oldestMessage.id}",
+                );
+              }
             }
             _loadPrevMessage(beforeMessageId);
             emit(
@@ -439,7 +445,9 @@ class ChatBloc extends Bloc<ChatEvent, ChatState> {
     QuestionStream stream,
     Map<String, dynamic>? sentMetadata,
   ) {
-    questionStreamMessageId = nanoid();
+    final now = DateTime.now();
+    final timestamp = now.millisecondsSinceEpoch;
+    questionStreamMessageId = timestamp.toString();
     final Map<String, dynamic> metadata = {};
 
     // if (sentMetadata != null) {
diff --git a/frontend/appflowy_flutter/lib/plugins/ai_chat/application/chat_user_message_bloc.dart b/frontend/appflowy_flutter/lib/plugins/ai_chat/application/chat_user_message_bloc.dart
index c0a29c2453..d6918eab53 100644
--- a/frontend/appflowy_flutter/lib/plugins/ai_chat/application/chat_user_message_bloc.dart
+++ b/frontend/appflowy_flutter/lib/plugins/ai_chat/application/chat_user_message_bloc.dart
@@ -15,7 +15,7 @@ class ChatUserMessageBloc
           ),
         ) {
     on<ChatUserMessageEvent>(
-      (event, emit) async {
+      (event, emit) {
         event.when(
           initial: () {
             if (state.stream != null) {
diff --git a/frontend/rust-lib/flowy-folder/src/manager.rs b/frontend/rust-lib/flowy-folder/src/manager.rs
index 0f3ff02c1e..f9034bf481 100644
--- a/frontend/rust-lib/flowy-folder/src/manager.rs
+++ b/frontend/rust-lib/flowy-folder/src/manager.rs
@@ -337,7 +337,7 @@ impl FolderManager {
 
   pub async fn get_workspace_pb(&self) -> FlowyResult<WorkspacePB> {
     let workspace_id = self.user.workspace_id()?;
-    let guard = self.mutex_folder.read();
+    let guard = self.mutex_folder.write();
     let folder = guard
       .as_ref()
       .ok_or(FlowyError::internal().with_context("folder is not initialized"))?;