Checklists for software errors, setup, and tool workflows.

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How to Fix Git Detached HEAD State and Undo Changes

You run git status and see something like "HEAD detached at abc123". This ha...

VS Code Terminal Not Opening with SSH: Fixes

You connect to a remote server via SSH in VS Code, but the integrated terminal stays blank or nev...

Fix Chrome ERR_CONNECTION_RESET After Router Reboot

If you see ERR_CONNECTION_RESET in Chrome after rebooting your router, you'r...

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Fix Docker Compose Environment Variable Missing Errors

You run docker-compose up and see errors like WARNING: The VARIABLE_NAME varia...

Chrome Sync Not Working on Work Network: Fixes to Try
If Chrome sync stops working when you're connected to your work network, the problem is often...