Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If Windows Defender real-time protection is turned off and grayed out, it's often because a G...

You run npm run build and get an error like Error: Missing required environmen...

Why npm Says 'package.json Not Found' and How to Fix It
You run npm install or npm start and get npm ERR! package.json no...

How to Fix 'fatal: refusing to merge unrelated histories' in Git
If you see fatal: refusing to merge unrelated histories when running git merge...

Fix Node Version Incompatibility When Installing Packages
You try to install an npm package and get an error like Unsupported engine or ...

Fix Git Merge Conflicts When Stash Changes Are Involved
You're mid-merge, and Git tells you there's a conflict. But you also have stashed changes...