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Published recentlyPublished Sep 28, 2026. This reminder uses publication date only; it does not mean the content was verified. Review again after Mar 27, 2027.

2024-02-02 20:12:37.871] [ERROR] [Server Error] {"title":"'messages' array must only contain objects with a 'content' f

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[piotrwalczak1 (commenter)]: I am also observing this running autogen + local LMStudio server (model does not matter). autogen: 0.2.35 LLStudio: 0.2.31 ``` raise self._make_status_error_from_response(err.response) from None openai.BadRequestError: Error code: 400 - {'error': "'messages' array must only contain objects with a 'content' field that is not empty."} ``` None of the listed workarounds work for me. > I just tested this for both Autogen Studio and Autogen (code) for version 0.2.20, and the response given by @victordibia is the correct response and the solution. There's really no change that's needed to the conversable_agent.py (this is optional). The reason is that you have to understand why the agent is sending the empty content. Using the "default_auto_reply" with a message like "am I still needed?" solves 

Context: GitHub issue microsoft/autogen#1521 (closed, 24 comments): ### Describe the bug Autogen studio when using LM Studio Local LLM throws this error when trying to respond through the AutoGen UI [2024-02-02 20:12:37.871] [ERROR] [Server Error] {"title":"'messages' array must only contain objects with a 'content' field that is not empty"} ### Steps to reproduce 1. In Autogen playground, the prompt I use is: Provide 2 research paper on Quantum vibrations. Just the link will suffice 2. LM Studio Generates the content 3. However, Autogen Studio is not able to display the output message. It throws the error message instead. ### Expected Behavior The JSON output

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