Checklists for software errors, setup, and tool workflows.

Cloudflare 522 Error Checklist: Causes and Fixes

If you see a 522 Connection Timed Out error when visiting your site, Cloudflare ...

Fix pnpm ERR! Cannot Find Module – Practical Steps

When running pnpm install or pnpm start, you might see an error like:

Fix Windows 11 Installation Assistant Stuck at 99%

You're running the Windows 11 Installation Assistant, it reaches 99%, and then nothing happen...

Fixing Nginx Upstream Connection Refused in Load Balancing

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

Windows Explorer Restarting Checklist for Advanced Users

If Windows Explorer (explorer.exe) keeps restarting—freezing, flashing, or crashing repeatedly—it...

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

Symptom

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