Checklists for software errors, setup, and tool workflows.

VSCode IntelliSense Not Working for Dart/Flutter: Fixes

You're writing Dart or Flutter code in VSCode, but IntelliSense (autocomplete, suggestions, g...

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 Nginx Permission Denied on CentOS: A Practical Guide

You're setting up Nginx on CentOS and hitting a 'permission denied' error in the erro...

Fix VSCode Git Authentication Failed SSH Key Error

You try to push or pull in VSCode and get Git: authentication failed even though you...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Fix Windows Security App Not Starting on Windows 11

You click the Windows Security icon or try to open it from Settings, but nothing happens. The app...