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

Fix VSCode Permission Denied on Save in Linux

You're editing a file in Visual Studio Code, press Ctrl+S, and see a red error: "Failed t...

Enable Wildcard Subdomain in Cloudflare: Step-by-Step

If you need all subdomains (like *.example.com) to point to the same server, a wildc...

pnpm audit fix not working: common causes and fixes

When you run pnpm audit fix and it fails, you might see messages like "No fixes ...

How to Fix Cloudflare SSL Full Strict Self-Signed Certificate Error

How to Restore Missing Windows Taskbar Icons

You open Windows and notice some taskbar icons are gone—maybe the volume, network, or battery ico...

Fix Nginx Upstream Connection Refused in Docker

You have Nginx running, either on the host or in a container, proxying to another Docker containe...