Fix Git 'index.lock' File Exists Error in SourceTree - Viewing the Diff in a Git Merge Conflict-Resolve pip Externally-Managed-Environment for venv on Linux

Updated 2026-07-28 11:08:57backup-recovery
Fix Git 'index.lock' File Exists Error in SourceTree - Viewing the Diff in a Git Merge Conflict-Resolve pip Externally-Managed-Environment for venv on Linux
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.