How to: Fix "Service Unavailable"

1. If you're using the local model, check the local models finished downloading — Settings → General → Setup assistant → Open shows what's missing.
2. If you're using Ollama, check it's running — Settings → LLM → Ollama shows its status, and Start Ollama starts it.
3. Restart the application.
4. Check your firewall isn't blocking local connections.

See Troubleshooting.