Git Merge Unrelated Histories: When and How to Use --allow-unrelated-histories - Fix Cloudflare 521 Error by Adjusting Firewall-Fix Wi-Fi No Internet on Windows 11 Without Restarting Router

Likely symptom
Likely cause
Safe rollback
Verification route
- Repeat the original action, not only a simplified test case.
- Restart the app or reload the service after configuration changes.