runtime error

Traceback (most recent call last): File "/home/user/app/app.py", line 10, in <module> llm = ChatOpenAI(temperature=1.0, model="gpt-3.5-turbo") File "/home/user/.local/lib/python3.10/site-packages/langchain/load/serializable.py", line 97, in __init__ super().__init__(**kwargs) File "/home/user/.local/lib/python3.10/site-packages/pydantic/v1/main.py", line 341, in __init__ raise validation_error pydantic.v1.error_wrappers.ValidationError: 1 validation error for ChatOpenAI __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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