Error2 reports
Fix BadRequestError
in LangChain
✅ Solution
This error typically occurs in langchain. Check the example issues for common solutions.
Related Issues
Real GitHub issues where developers encountered this error:
ChatAnthropic streaming drops thinking field from empty thinking blocks (signature_delta-only), replay fails with 400 thinking.thinking: Field requiredJul 3, 2026
ChatAnthropic streaming drops `thinking` field from empty thinking blocks (signature_delta-only), replay fails with 400 `thinking.thinking: Field required`Jul 3, 2026
Timeline
First reported:Jul 3, 2026
Last reported:Jul 3, 2026