Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see 'permission denied' in the VSCode integrated terminal on Windows, it's usu...

When building a React app, you might see a fatal error like FATAL ERROR: Ineffective mark-c...

Fix Git Push Rejected: Non-Fast-Forward Error
You try to push a commit to a remote repository and get: ! [rejected] main -> main (non-...

How to Fix npm ERR! enoent ENOENT: package.json Missing
You run npm install and get npm ERR! enoent ENOENT: no such file or directory,...

Fix VSCode Breakpoints Not Hit in launch.json
You set a breakpoint in Visual Studio Code, start debugging with a launch.json confi...

Fix VSCode Git Authentication Failed: Permission Denied
If you see 'Git authentication failed' or 'permission denied' when pushing or pul...