Knowledge base for software setup, errors, and daily tool work.

Fix Nginx 502 Bad Gateway on Docker Ubuntu

How to Fix Cloudflare 521 Error with Wildcard Subdomains

If you're seeing a Cloudflare 521 error on a wildcard subdomain (e.g., *.example.com), the or...

Docker Desktop Engine Stopped After Update: Fixes

After a Docker Desktop update, you may see the engine fail to start. The UI shows a red status ba...

Fix VS Code Git Authentication Failed Keychain Error

If you see "Git authentication failed" in VS Code on macOS, the problem is often the macO...

Fix VS Code Git Changes Not Showing in Source Control Panel

You open the Source Control panel in VS Code expecting to see your unstaged and staged changes, b...

Chrome Memory Not Decreasing After Closing Tabs – Fixes

You close a dozen tabs, but Chrome still eats 2 GB of RAM. This is normal up to a point—Chrome ca...