Checklists for software errors, setup, and tool workflows.

Fixing Nginx Upstream Connection Refused on Port 443

You see "upstream connection refused" in your Nginx error log when proxying requests to p...

Fix 'Git Remote Origin Already Exists' When Updating Remote URL

You run a command like git remote add origin https://newurl.com/repo.git and get

How to Fix Nginx 'Upstream Connection Refused' Error

When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...

Fix Nginx Permission Denied for Static Files

Common Causes

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

Fix 'Permission Denied' When Deleting Files in VS Code

You try to delete a file or folder in VS Code's Explorer, but get an error: Permission ...