Checklists for software errors, setup, and tool workflows.

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Latest checklists

When Nginx returns 502 Bad Gateway or logs upstream connection refused timeout...

Fix Chrome Extensions Not Loading Configuration
You install a Chrome extension, configure it carefully, and then—nothing. The extension icon is g...

Fix ERR_CONNECTION_RESET Caused by Firewall Blocking Chrome
If you see ERR_CONNECTION_RESET in Chrome, it usually means something interrupte...

Fix 'Permission Denied' in VS Code Terminal on Linux
You're working in VS Code on Linux, open the integrated terminal, and run a command—only to s...

Fix npm install Permission Denied (EACCES) Error
When you run npm install and see an error like Error: EACCES: permission denie...

Fix Nginx Configuration Test Failure After SSL Setup
You've just added SSL certificates to your Nginx server block, but nginx -t retu...