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

Fix Nginx 502 Bad Gateway: Upstream Connection Refused

If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...

Fix Cloudflare SSL Full Strict Redirect Loop

If you've enabled Cloudflare's SSL/TLS encryption mode to Full (Strict) ...

How to Fix Git Detached HEAD and Checkout a Branch

You're working in a Git repository, make some commits, and then realize you're in a '...

Git Merge Conflict Auto Resolve Not Working: Common Fixes

You run git merge expecting conflicts to be resolved automatically, but instead you ...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer Certificate

Fixing 'git rebase index.lock file exists' Error

When running git rebase, you may see an error like fatal: Unable to create ...