RAG

• https://retrieval-tutorials.vercel.app/ 

  • retrieval tutorials

• https://js.langchain.com/docs/tutorials/ 

  • js langchain tutorials
  • don’t get confused with the python langchain tutorials

• Cannot read properties of undefined (reading ‘text’)

  • https://community.n8n.io/t/code-node-throws-cannot-read-properties-of-undefined-reading-text-in-version-1-75-2/73286/3 
  • solution: switch model to
  • model: “gemini-2.0-flash”,

• committed chroma db to git, and Github rejected it because it is over 100MB. remove track by add it to gitignore, but it is already in git. use git rebase squash to remove the big file.