Error2 reports

Fix `ValidationError`

in vLLM

✅ Solution

This error typically occurs in vllm. Check the example issues for common solutions.

Related Issues

Real GitHub issues where developers encountered this error:

[Bug]: echo=true kills the stream with a ValidationError when the last message content is a list (multimodal content format) — non-streaming succeeds21h ago

[Bug]: Responses API: explicit "background": null or "truncation": null fails response construction (confusing 400 / broken SSE stream)Jul 11, 2026

Timeline

First reported:Jul 11, 2026

Last reported:21h ago

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