streamlit openai==0.27.4 watermark poppler-utils langchain==0.0.173 langchain_community chromadb==0.3.23 pypdf==3.8.1 pygpt4all==1.1.0 pdf2image==1.16.3 tiktoken==0.3.3 unstructured[local-inference]==0.5.12 gradio==3.38.0