Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

After updating Node.js, you might see a permission denied error when running npm install

Fix 'python command not found' After Windows Upgrade
After upgrading Windows 10 to 11 (or a major feature update), many users find that typing p...

Fix npm run build Failed with PostCSS Error
You run npm run build and see a PostCSS error. This often happens after updating pac...

Fix Git Authentication Failed in VS Code on Mac
If you see "Git authentication failed" when pushing or pulling in VS Code on a Mac, the p...

Fix pip Externally Managed Environment on Debian 12
If you're on Debian 12 and get error: externally-managed-environment when using ...

Fix 'node sass build failed' During npm install
When running npm install, you might see an error like "node sass build f...