Checklists for software errors, setup, and tool workflows.

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Latest checklists

You run npm run build and it fails with errors like SyntaxError: Unexpected to...

Fix Git Lock File Not Deleted After Crash
If Git reports a lock file error after a crash, it usually means a previous Git operation was int...

Fix Cloudflare Wildcard Subdomain Page Rule Not Working
You set up a wildcard subdomain page rule in Cloudflare—like * .example.com/*—but it...

Git Fatal: Refusing to Merge Unrelated Histories – Workaround
You try to merge two Git branches and get this error:
fatal: refusing to merge unre...

How to Fix Nginx Redirect Loop with Cloudflare
You set up Cloudflare for your site, and now visitors see a redirect loop error. The page keeps r...

How to Enable Bluetooth Service in Windows 11
If Bluetooth suddenly stops working in Windows 11—the icon disappears, devices won't pair, or...