Resolving Python Dependency Conflicts in Docker Containers - Fix 521 Origin Connection Error After Server Update-Git index.lock File Exists: Causes and Solutions

Updated 2026-07-28 09:54:53macos-help
Resolving Python Dependency Conflicts in Docker Containers - Fix 521 Origin Connection Error After Server Update-Git index.lock File Exists: Causes and Solutions
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.