Checklists for software errors, setup, and tool workflows.

How to Fix Nginx Upstream Connection Refused Error

If you're seeing upstream connection refused in your Nginx error logs, it usuall...

How to Generate a Cloudflare Origin Certificate

If you're using Cloudflare as a reverse proxy, you may want to encrypt traffic between your s...

Fix Docker Build Context Canceled by Excluding Files

You run docker build and after a long wait see context canceled. This o...

Fix VS Code Terminal Not Opening on Mac

You open VS Code, press Ctrl+` or click the Terminal panel, and nothing happens. The...

Fix Nginx Permission Denied for Static Files

Common Causes

When Nginx returns a 403 Forbidden or 'permission denied' error for...

Fix 'Permission Denied' in VS Code Terminal for Node.js

You're working in VS Code, run npm install or node app.js, and get ...