runtime error

Exit code: 1. Reason: Traceback (most recent call last): File "/home/user/app/app.py", line 55, in <module> app_gui() File "/home/user/app/app.py", line 11, in app_gui bot = Assistant(llm={ File "/usr/local/lib/python3.10/site-packages/qwen_agent/agents/assistant.py", line 79, in __init__ super().__init__(function_list=function_list, File "/usr/local/lib/python3.10/site-packages/qwen_agent/agents/fncall_agent.py", line 36, in __init__ super().__init__(function_list=function_list, File "/usr/local/lib/python3.10/site-packages/qwen_agent/agent.py", line 41, in __init__ self.llm = get_chat_model(llm) File "/usr/local/lib/python3.10/site-packages/qwen_agent/llm/__init__.py", line 48, in get_chat_model return LLM_REGISTRY[model_type](cfg) File "/usr/local/lib/python3.10/site-packages/qwen_agent/llm/qwen_dashscope.py", line 19, in __init__ super().__init__(cfg) File "/usr/local/lib/python3.10/site-packages/qwen_agent/llm/function_calling.py", line 12, in __init__ super().__init__(cfg) File "/usr/local/lib/python3.10/site-packages/qwen_agent/llm/base.py", line 59, in __init__ self.model = cfg.get('model', '').strip() AttributeError: 'NoneType' object has no attribute 'strip'

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