Checklists for software errors, setup, and tool workflows.

Fix Nginx Configuration Test Failure for Upstream Directive

When you run nginx -t and get an error involving the upstream directive...

Fix PyCharm Virtual Environment Not Activating

When you open a terminal in PyCharm and see the base Python interpreter instead of your virtual e...

Fixing Node Version Mismatch with package.json Engines

You run npm install or node app.js and see a warning or error about the...

Cloudflare Origin Certificate Not Showing in Dashboard: Fix

If you've generated a Cloudflare origin certificate but it doesn't appear in your dashboa...

Fix Windows 11 WiFi Connected but No Internet After Sleep

You wake your Windows 11 PC from sleep, the WiFi icon shows connected, but you can't load any...

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

Symptom

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