Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see node-sass build failed python not found when running npm install

Fix VS Code Breakpoints Not Hitting in WSL
If you're debugging a project in WSL and VS Code breakpoints aren't being hit, you're...

Fix Git 'index.lock' File Exists Error in SourceTree
If you use SourceTree and see an error message like fatal: Unable to create 'path/to/.g...

Setup Cloudflare Origin Certificate for Nginx
If you use Cloudflare as a reverse proxy, enabling HTTPS between Cloudflare and your Nginx server...

How to Fix Chrome Extensions Not Loading
You open Chrome, click the puzzle icon, and your extensions are grayed out or missing. This is co...

Fix Firefox Secure Connection Failed Not Loading
If Firefox shows a “Secure Connection Failed” error and won’t let you load a site, it usually mea...