langchain langchain-community beautifulsoup4 pandas transformers llama-cpp-python --extra-index-url https://abetlen.github.io/llama-cpp-python/whl/cu121 #torch \ #--extra-index-url https://download.pytorch.org/whl/cu121 sentence_transformers faiss-cpu pypdf python-docx #ctransformers[cuda] keybert span_marker gensim gradio==4.31.5 gradio_client nltk scipy<1.13