The server isn't answering AI requests. It's most likely still running the version from before the AI update.
Restart it: in the terminal running the site, press Ctrl+C, then run npm start (or kb serve) and reload this page.
npm start
kb serve
Or set it up from a terminal with kb setup.
kb setup
Used for “Evaluate with AI”, the tutor chat and answering #doubt lines, here and in the kb CLI. Keys are saved to kb.config.json on this machine. That file is git-ignored and keys are never sent to the browser.
#doubt
kb
kb.config.json
Used for “Evaluate with AI”, the tutor chat and answering #doubt lines. Requests go straight from this browser to the provider. Your key is kept in this browser only: for this session, or on this device if you tick Remember. It is never saved to your data folder. Free options: Google Gemini (free tier), or Ollama on this computer.
Used for “Evaluate with AI”, the tutor chat and answering #doubt lines. Connect once: your provider and key are saved in KB's private folder in your Google Drive, so they work on every device you sign in on. Requests go straight from your device to the provider; there is no KB server in between. Free option: Google Gemini (free tier).
Free and fully offline: install Ollama, run ollama pull gemma4:12b, and keep ollama serve running. On this website, start Ollama with OLLAMA_ORIGINS set to this site's address so the page may call it (see the README), and allow local network access if Chrome asks.
ollama pull gemma4:12b
ollama serve
OLLAMA_ORIGINS