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

Git Detached HEAD vs Attached HEAD: What It Means and How to Fix

If you've seen the message "You are in 'detached HEAD' state" while using Git...

How to Fix Nginx Upstream Connection Refused Error

If you're seeing upstream connection refused in your Nginx error logs, it usuall...

Fix ERR_NAME_NOT_RESOLVED with CMD: Step-by-Step Guide

When you see ERR_NAME_NOT_RESOLVED in your browser, it usually means your computer can't tran...

Fix npm run build failing due to ESLint errors

You run npm run build and it fails with a wall of ESLint errors. This is common when...

DNS Probe Finished NXDOMAIN: Internet Connection but No Browsing Fix

You see the error 'DNS probe finished NXDOMAIN' on Chrome or other browsers, yet your int...

Python Requests: timeout vs timeout Seconds Explained