Fix BadRequestError

✅ Solution

BadRequestError in pydantic often arises in `model_validator` when the validator receives the raw input data (e.g., a dictionary) instead of the partially validated model instance, especially with `mode='wrap'`. To fix this, ensure your validator's signature correctly expects the validator function and the existing model instance/data as arguments; adjust the validator's logic to handle the input accordingly or, if appropriate, switch to `mode='before'` or `mode='after'` if you need to operate on the raw data before or after validation, respectively. Carefully review the expected input type based on the validator's mode and adapt your code.