Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You have an Nginx container proxying requests to another container (like a PHP-FPM or Node app), ...

You're working in a subdirectory of your project, run npm install or npm r...

How to Fix the Git index.lock File Exists Error
You're in the middle of a Git operation—commit, merge, or rebase—and Git stops with: fa...

Fix Windows 11 Update Stuck at 0% with Low Disk Space
You're trying to install a Windows 11 update, but it's stuck at 0% for a long time. One f...

Fix Git Clone Timeout in VS Code: Practical Steps
You're trying to clone a repository in VS Code, but the operation times out. This often happe...

Fix Bluetooth Device Not Detected on Windows 11
You try to pair a Bluetooth mouse, keyboard, or headphones, but Windows 11 doesn't see the de...