Once, again thank you to the streamlit team for hosting this competition.
Here’s the repo 
I hope this helps folks building RAG applications!
For now, the best experience is to clone the repo and run this locally!
The vector database is an in-memory one (Chroma), and I suspect many people using it, or quitting the app while the vector database is being built, causes some issues. Some tweaks to the control flow and deployment may resolve that.
Any feedback for improvement would be most appreciated. I will still continue to work on this.