gradio==4.19.1 langchain~=0.1.0 langchainhub~=0.1.14 transformers>=4.35.2 huggingface_hub~=0.20.1 sentence_transformers~=2.2.2 langchain-qdrant #qdrant-client~=1.7.0 PyMuPDF~=1.23.7