Checklists for software errors, setup, and tool workflows.

Fix Docker Nginx 502 Bad Gateway with MySQL

You have a Dockerized web app behind Nginx, and you're seeing a 502 Bad Gateway error. The ap...

Chrome Startup Crash on Windows 11: Fixes That Work

You click the Chrome icon on your Windows 11 PC, the window flickers, and then nothing—or you get...

Git Merge Unrelated Histories: When and How to Use --allow-unrelated-histories

You try to merge two branches and get fatal: refusing to merge unrelated histories. ...

Fix 'python' Command Not Found on Windows 10 with Python 3.10

After installing Python 3.10 on Windows 10, you might type python in Command Prompt ...

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

Symptom

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

How to Fix Firefox Secure Connection Failed with VPN

You're using a VPN and Firefox suddenly shows 'Secure Connection Failed' on sites tha...