Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You see a Cloudflare 521 error page. The message says the web server is down. Often, this means y...

You install a package and get errors like requires Node.js >= 16, but you have 18...

You've likely hit this: you try to push a commit, and Git rejects it because a file is too la...

When Microsoft Edge shows "DNS_PROBE_FINISHED_NXDOMAIN", it means the browser cannot reso...

You're setting up Nginx on CentOS and hitting a 'permission denied' error in the erro...

If you see a 'STATUS_ACCESS_VIOLATION' error in Chrome, often accompanied by a crash or a...