Checklists for software errors, setup, and tool workflows.

VS Code Git Changes Not Detected After Save: Fixes

You save a file in VS Code, but the Source Control panel shows no changes. The file doesn't a...

Git Push Rejected Non Fast Forward: Troubleshooting Checklist

If you see ! [rejected] main -> main (non-fast-forward) when running

Fix Git Merge Conflicts with Deleted Files

You're in the middle of a merge and git stops with a conflict. One side deleted a file, the o...

How to Fix npm Permission Denied for Global Packages

When you run npm install -g and see EACCES: permission denied, it usual...

Fixing Nginx Upstream Connection Refused in Load Balancing

When Nginx load balancing returns upstream connection refused, it means one or more ...

How to Fix Git Merge Unrelated Histories Error

You run git pull or git merge and get:

fatal: refusing to...