runtime error

Traceback (most recent call last): File "/home/user/app/app.py", line 16, in <module> llm = ChatOpenAI(model='gpt-3.5-turbo', temperature=0, File "/usr/local/lib/python3.10/site-packages/langchain_core/load/serializable.py", line 120, in __init__ super().__init__(**kwargs) File "/usr/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)

Container logs: