runtime error

Traceback (most recent call last): File "app.py", line 11, in <module> allo_chatbot = AllofreshChatbot(debug=True) File "/home/user/app/allofresh_chatbot.py", line 29, in __init__ self.llms = self.init_llm() File "/home/user/app/allofresh_chatbot.py", line 41, in init_llm "gpt-4": AzureChatOpenAI( File "pydantic/main.py", line 341, in pydantic.main.BaseModel.__init__ pydantic.error_wrappers.ValidationError: 8 validation errors for AzureChatOpenAI model_name none is not an allowed value (type=type_error.none.not_allowed) openai_api_key none is not an allowed value (type=type_error.none.not_allowed) openai_organization none is not an allowed value (type=type_error.none.not_allowed) deployment_name none is not an allowed value (type=type_error.none.not_allowed) openai_api_type none is not an allowed value (type=type_error.none.not_allowed) openai_api_base none is not an allowed value (type=type_error.none.not_allowed) openai_api_version none is not an allowed value (type=type_error.none.not_allowed) __root__ Did not find openai_api_key, please add an environment variable `OPENAI_API_KEY` which contains it, or pass `openai_api_key` as a named parameter. (type=value_error)

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