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Fix npm run build Failures After npm install - How to Resolve Cloudflare 521 from Server Overload-Resolve Git Authentication Failed in VS Code macOS

2026-07-28 13:21:36
Fix npm run build Failures After npm install - How to Resolve Cloudflare 521 from Server Overload-Resolve Git Authentication Failed in VS Code macOS

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.

Next references

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