Checklists for software errors, setup, and tool workflows.

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Fix Nginx Permission Denied on Socket File

When Nginx throws a "permission denied" error for a socket file, the web server can't...

Docker Compose Env File Not Being Read: Fixes

You set up a .env file for your Docker Compose project, but variables aren't bei...

Fix Nginx Permission Denied for Static Files

Common Causes

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

Fix ERR_NAME_NOT_RESOLVED in Chrome: Network Troubleshooting Guide

When Chrome displays ERR_NAME_NOT_RESOLVED, it means the browser cannot translat...

How to Merge Two Git Repositories with Unrelated Histories

You have two separate Git repositories that you now want to combine into one. Perhaps you acquire...