Checklists for software errors, setup, and tool workflows.

Fix 'port already allocated' Error in Docker Compose

You run docker compose up and see port is already allocated. This means...

Fix Nginx Permission Denied for Static Files

Common Causes

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

Fix Chrome Extensions Not Loading Configuration

You install a Chrome extension, configure it carefully, and then—nothing. The extension icon is g...

Docker Container Exits Immediately: Diagnosing Out of Memory

You start a Docker container and it exits within seconds. The logs show nothing obvious, or they ...

How to Enable Chrome Extensions That Aren't Loading

You open Chrome and see a grayed-out extension icon. Clicking 'Enable' does nothing, or t...

Clear Chrome Certificate Cache to Fix NET::ERR_CERT_AUTHORITY_INVALID

When you see NET::ERR_CERT_AUTHORITY_INVALID in Chrome, it usually means the browser...