Error1 reports
Fix ValidationError
in FastAPI
✅ Solution
The "ValidationError: field required (type=value_error.missing)" error usually means your FastAPI endpoint expects a specific field in the request body, but it's missing or wasn't properly sent in the request. To fix this, ensure your request body includes all the required fields as defined in your Pydantic model associated with the endpoint, and verify that the field names match exactly. Also, check that the Content-Type header in your request is set to "application/json" if you are sending a JSON payload.
Related Issues
Real GitHub issues where developers encountered this error:
Timeline
First reported:Sep 14, 2025
Last reported:Sep 14, 2025