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Fix Ubuntu APT Lock Not Released After Update - Git Pull Merge Conflict: Setup and Fix Guide-MongoDB Authentication Failed Error 18: Causes and Fixes

2026-06-16 06:36:22developer-tools
Fix Ubuntu APT Lock Not Released After Update - Git Pull Merge Conflict: Setup and Fix Guide-MongoDB Authentication Failed Error 18: Causes and Fixes

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.