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Fixing Cloudflare 521 Error: Enable Origin Pull Setup - Stop Nginx Redirect Loop Between HTTP and HTTPS-Resolving package.json Engine Mismatch in Node

Updated 2026-07-28 14:47:17office-tools

Fixing Cloudflare 521 Error: Enable Origin Pull Setup - Stop Nginx Redirect Loop Between HTTP and HTTPS-Resolving package.json Engine Mismatch in Node

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Record the exact option, command, or setting that changed the result.
Keep a rollback note if the workflow affects shared files or team settings.

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