I have a problem implementing PDF-RAG, since there is no OpenAI API, I want to try local llm, but it is not clear how to configure PDFSearchTool. Error Info： File "/home/an/Desktop/crewAI/.venv/lib/python3.11/site-packages/embedchain/app.py", line 121, in __init__ self.embedding_model = embedding_model or OpenAIEmbedder() ^^^^^^^^^^^^^^^^ File "/home/an/Desktop/crewAI/.venv/lib/python3.11/site-packages/embedchain/embedder/openai.py", line 19, in __init__ api_key = self.config.api_key or os.environ["OPENAI_API_KEY"] ~~~~~~~~~~^^^^^^^^^^^^^^^^^^ File "<frozen os>", line 679, in __getitem__

🇧🇷 👋 Hi Guys, for the past few weeks I'm trying to develop a rag model that can retrieve information from pdfs, but my first issue started with pdfs that contain charts and images. Does anyone knows how to extract all the data to a data frame using offline open source packages? And how can I retrieve this raw files together with the summarized embeddings?

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