Checklists for software errors, setup, and tool workflows.

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Latest checklists

If you're running npm install on a Linux machine and get a build failure for

You have an Nginx container running on Alpine Linux, and it returns a 502 Bad Gateway. This usual...

If you see an error like fatal: Unable to create 'project/.git/index.lock': File ex...

Fix npm run build Failure Due to Node Version Mismatch
You run npm run build and it fails with errors like SyntaxError: Unexpected to...

Fix npm install Permission Denied on Shared Hosting
When you run npm install on a shared hosting server, you might see errors like

Cloudflare Wildcard Subdomain CNAME Setup Guide
If you need to route all subdomains (e.g., *.example.com) to the same target, a wildcard CNAME re...