Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see ERR_NAME_NOT_RESOLVED in Chrome on your Android phone, it means the b...

When you run nginx -t and see an error like [emerg] invalid location directive...

Fix 'python command not found' on Windows
You're trying to run a Python script on Windows, but you get an error like 'python&...

How to Resolve Git Merge Conflicts on the Same Line
You run git merge and get a conflict marker on a single line. The file shows both ve...

Fix npm ENOENT Package.json Not Found & Permission Denied
You run npm install and get a wall of red: ENOENT: no such file or directory, ...

Fix pnpm ERR_PNPM_OUTDATED_LOCKFILE Lockfile Error
When running pnpm install or pnpm update, you may see:
ER...