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

Recover Lost Commits After Git Detached HEAD

You've made commits while in a detached HEAD state, and now you can't see them on any bra...

Nginx Upstream Connection Refused: Diagnosis and Fixes

When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...

Fix ERR_NAME_NOT_RESOLVED in Chrome with Google DNS

When you see ERR_NAME_NOT_RESOLVED in Chrome, it usually means your computer can...

Fix Node Sass Build Failure After npm Cache Clean

Fixing Cloudflare 522 Error: CDN Configuration Steps

If you see a 522 Connection Timed Out error from Cloudflare, it means your CDN (...

Fix Git Clone Connection Timed Out Due to Proxy Settings

You run git clone https://github.com/example/repo.git and after a long pause you get...