Fix Git 'refusing to merge unrelated histories' Error - Cloudflare 521 Error: Server Timeout – Causes and Fixes-Creating a Docker Network When It's Missing

Updated 2026-07-28 10:33:32macos-help
Fix Git 'refusing to merge unrelated histories' Error - Cloudflare 521 Error: Server Timeout – Causes and Fixes-Creating a Docker Network When It's Missing
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.