RAG vector store having unexplainable issue

I have build a Qdrant vector store which loaded the document from Google drive successfully. Now, I run the workflow and the Vector Store Question Answer Tool node connected to the AI agent and the Vector store connected to it are not running.

It’s not showing a real error, just “bad request”. The workflow runs and returns an output but my issue is it doesn’t answer every question whose answer can be found in the knowledge base.

Please share your workflow

Share the output returned by the last node

Information on your n8n setup

  • **n8n version: latest stable version
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • **Running n8n via n8n cloud
  • **Operating system: latest macOS