Fix TypeError

✅ Solution

The TypeError usually arises when SQLAlchemy expects a `TypeEngine` object (like `String`, `Integer`, `Date`), but receives a plain Python type (like `str`, `int`, `datetime.date`). To fix it, ensure you're using the SQLAlchemy type objects directly in your table definitions; import them from `sqlalchemy` (e.g., `from sqlalchemy import String, Integer, Date`). Avoid passing the Python type directly to the `Column` constructor.