Checklists for software errors, setup, and tool workflows.

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Fix Nginx Upstream Connection Refused in Proxy Pass

When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Fix 'pip externally managed environment' Permission Denied Error
If you see error: externally-managed-environment when trying to install a Python pac...

Fix npm install Permission Denied After Node Update
After updating Node.js, you might see a permission denied error when running npm install

Fix Docker Nginx 502 Bad Gateway with MySQL
You have a Dockerized web app behind Nginx, and you're seeing a 502 Bad Gateway error. The ap...

Fix Git 'index.lock file exists' Error
When you see the error fatal: Unable to create 'path/.git/index.lock': File exists....

Fix Windows Explorer Restarting After Login
If Windows Explorer keeps restarting after you log in, you’ll see the desktop flash, icons disapp...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Nginx Upstream Connection Refused in Proxy Pass

Fix 'pip externally managed environment' Permission Denied Error

Fix npm install Permission Denied After Node Update

Fix Docker Nginx 502 Bad Gateway with MySQL

Fix Git 'index.lock file exists' Error

Fix Windows Explorer Restarting After Login

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