Checklists for software errors, setup, and tool workflows.

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Fix Docker Nginx 502 Bad Gateway Upstream Error

When running Nginx as a reverse proxy in Docker, a 502 Bad Gateway error with 'upstream' ...

Cloudflare DNS Setup Propagation Not Completing: Fixes

You've updated your DNS records at Cloudflare, but hours later the changes still aren't s...

Fix VS Code Source Control Not Detecting Changes on Ubuntu

If you're using VS Code on Ubuntu and the Source Control panel shows no changes even after ed...

How to Re-enable IntelliSense in VS Code When It's Disabled

If IntelliSense suddenly stops working in Visual Studio Code—no suggestions pop up as you type, o...

DNS Probe Finished NXDOMAIN: Meaning and Fixes

You're trying to visit a website but Chrome shows "DNS_PROBE_FINISHED_NXDOMAIN". This...