How to Fix npm Run Build Failed Error - npm package.json Missing: Causes and Solutions-Resolving 'index.lock File Exists' in Git

Updated 2026-07-28 04:05:33cloud-software

How to Fix npm Run Build Failed Error - npm package.json Missing: Causes and Solutions-Resolving 'index.lock File Exists' in Git

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.