After stopping the conversation,API request failed with status code 422,Request param content len should not be 0.

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

Steps to reproduce
1、use APi request with conversation_id.
2、when the request is returning the message,interrupt the session.
3、After stopping the conversation,API request failed with status code 422,Request param content len should not be 0.

{"event": "error", "conversation_id": "daeaf63b-8ca3-483a-90b7-a180c8be9726", "message_id": "9573e2e5-8cc0-4401-940e-35a41c437d7c", "created_at": 1744883282, "code": "completion_request_error", "status": 400, "message": "[openai_api_compatible] Error: PluginInvokeError: {"args":{"description":"[models] Error: API request failed with status code 422: {"error":"Request param content len should not be 0","error_type":"Input Validation Error"}"},"error_type":"InvokeError","message":"[models] Error: API request failed with status code 422: {"error":"Request param content len should not be 0","error_type":"Input Validation Error"}"}"}

✔️ Expected Behavior
After stopping the conversation,API request success with same conversation id.

❌ Actual Behavior
After stopping the conversation,the conversation seem to be killed.can not request success again.

2. Additional context or comments

No response