why 500

[xiaoqi371317]

INFO: 127.0.0.1:65025 - "POST /api/v1/chat/completions HTTP/1.1" 500 Internal Server Error

================================================================================
🔵 NEW API REQUEST RECEIVED

📥 Request body keys: ['messages', 'model', 'max_tokens', 'stream']
🌊 Stream mode: True
🤖 Requested model: claude-opus-4-5-20251101-thinking-32k
💬 Number of messages: 3
📚 Total models loaded: 350
✅ Found model ID: 019ab8b2-9bcf-79b5-9fb5-149a7c67b7c0
🔧 Model capabilities: {'inputCapabilities': {'text': True}, 'outputCapabilities': {'text': True, 'web': True}}
🔍 Model modality: chat

❌ TOP-LEVEL EXCEPTION
📛 Error type: TypeError
📛 Error message: sequence item 0: expected str instance, list found