Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When you run nginx -t inside a Docker container and get an error, the container usua...

You open Chrome, click the extensions icon, and nothing appears—or your extensions are grayed out...

You're in the middle of a git merge, and instead of the usual conflict markers, you see

You're in the middle of a Git operation—commit, merge, or rebase—and Git stops with: fa...

Fix Chrome Certificate Error Invalid Authority on Mac
You're browsing in Chrome on a Mac and suddenly see a warning: Your connection is not...

Fix npm run build Failure from Missing Env Variables
You run npm run build and get an error like Error: Missing required environmen...