Troubleshooting
Fixes for common build, networking, and env issues.
Build or start failed
Check:
- Start command is valid
- Required env vars are present
- Dependencies install successfully
Then redeploy after fixing config or code.
App is running but unreachable
Check:
- App listens on configured
PORT - Health endpoint (if used) returns success
Custom domains are still being polished — if you're using one and it isn't routing, reach out and fall back to the default hosting URL in the meantime.
Missing env secrets
If runtime errors indicate missing keys/tokens:
- add env vars in dashboard
- redeploy