torch transformers langchain pypdf PyPDF2 jinja2 chroma qdrant-client ctransformers aiofiles aiohttp langchain-community==0.2.1 langchain-core==0.2.1 ctransformers>=0.2.27 qdrant-client>=1.9.0 sentence-transformers>=2.2.2 fastapi>=0.108.0 uvicorn python-multipart>=0.0.6