Fix PydanticSchemaGenerationError

✅ Solution

PydanticSchemaGenerationError usually arises when autogen attempts to create a Pydantic schema from a class or function with unsupported or complex type annotations. To fix this, ensure all type hints are simple, concrete Pydantic-compatible types (like str, int, List[str]), and avoid using generics or custom classes that lack proper Pydantic schema definitions. When encountering errors with tools, carefully examine the tool's function signature and data types, simplifying complex outputs where possible and providing explicit type converters if needed.