# Error Handling Reference

| Error | Cause | Solution |
|-------|-------|----------|
| Invalid DSN | Incorrect or malformed DSN | Verify DSN format in Sentry project settings |
| Rate Limited | Exceeded quota | Check quota at https://sentry.io/settings |
| Network Error | Firewall blocking | Ensure outbound HTTPS to *.ingest.sentry.io |
| Module Not Found | Installation failed | Run `npm install` or `pip install` again |