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Fix Git 'index.lock file exists' Error - Nginx Upstream Connection Refused: Diagnosis and Fixes-Resolving Python's Externally Managed Environment Warning

Updated 2026-07-28 13:22:14cloud-software
Fix Git 'index.lock file exists' Error - Nginx Upstream Connection Refused: Diagnosis and Fixes-Resolving Python's Externally Managed Environment Warning
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.

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