Fix PydanticUserError

✅ Solution

PydanticUserError in instructor often arises from mismatches between type annotations and the actual data or functions being passed within instructor models or functions, particularly with generics like `List[Annotated[MyType, ...]]` or mixins. Review your type annotations and ensure they accurately reflect the expected structure and types, paying close attention to any custom validators or coercers used within `Annotated` and within mixins such as `Partial`. Explicitly defining `__pydantic_config__` in classes that inherit from Pydantic models, even with an empty dictionary, can also resolve some issues.