runtime error

Exit code: 1. Reason: Traceback (most recent call last): File "/app/app.py", line 26, in <module> model = ChatNebius( ^^^^^^^^^^^ File "/usr/local/lib/python3.11/site-packages/langchain_core/load/serializable.py", line 118, in __init__ super().__init__(*args, **kwargs) File "/usr/local/lib/python3.11/site-packages/pydantic/main.py", line 250, in __init__ validated_self = self.__pydantic_validator__.validate_python(data, self_instance=self) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/local/lib/python3.11/site-packages/langchain_nebius/chat_models.py", line 356, in validate_environment self.client = openai.OpenAI( ^^^^^^^^^^^^^^ File "/usr/local/lib/python3.11/site-packages/openai/_client.py", line 139, in __init__ raise OpenAIError( openai.OpenAIError: The api_key client option must be set either by passing api_key to the client or by setting the OPENAI_API_KEY environment variable

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