runtime error

Traceback (most recent call last): File "/home/user/app/app.py", line 11, in <module> client = MistralClient(api_key=api_key) File "/usr/local/lib/python3.10/site-packages/mistralai/client.py", line 40, in __init__ super().__init__(endpoint, api_key, max_retries, timeout) File "/usr/local/lib/python3.10/site-packages/mistralai/client_base.py", line 30, in __init__ raise MistralException(message="API key not provided. Please set MISTRAL_API_KEY environment variable.") mistralai.exceptions.MistralException: API key not provided. Please set MISTRAL_API_KEY environment variable. Exception ignored in: <function MistralClient.__del__ at 0x7f93be487be0> Traceback (most recent call last): File "/usr/local/lib/python3.10/site-packages/mistralai/client.py", line 49, in __del__ self._client.close() AttributeError: 'MistralClient' object has no attribute '_client'

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