RAG worked once but now doesn't

I’m working on setting up the LLM Application on a 17.9.0 XWiki instance. I’ve installed

  • LLM Application (BETA) 0.7.2
  • Token-based authentication for the LLM Application (BETA) 0.7.2
  • LLM Internal Inference Server (BETA) 0.7.2
  • Index for the LLM Application (BETA) 0.7.2

I’m using gpt-4o as the model and have a collection for most of the wiki’s content pages.

I was able to get wiki-specific responses, including sources that referred to wiki pages, for a few prompts but when I returned later this RAG behavior was gone.

Any thoughts on how I might debug this?

Thanks!