runtime error

Traceback (most recent call last): File "app.py", line 14, in <module> embeddings = OpenAIEmbeddings() File "pydantic/main.py", line 341, in pydantic.main.BaseModel.__init__ pydantic.error_wrappers.ValidationError: 1 validation error for OpenAIEmbeddings __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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