no issue
- the Ember Data `Model` class has an `errors` property by default that
is set to a `DS.Errors` instance but the Theme model was overriding that
with an `errors` attr
- it hasn't been an issue so far but causes problems in Ember/Ember Data
3.28.x because that tries to use the `DS.Errors` interface on the
overridden attr property which then throws errors because the `errors`
attr doesn't have the right methods
refs https://github.com/TryGhost/Admin/pull/2227
A continuation of #2227 that runs the native classes codemod against app/serializers.
Most of the serializers that are trying to be transformed are failing with the same issue:
```
Validation errors:
[attrs]: Transform not supported - value is of type object. For more details: eslint-plugin-ember/avoid-leaking-state-in-ember-objects
2022-02-02T05:54:58.571Z [warn] [app/serializers/role.js]: FAILURE
```
