Checklists for software errors, setup, and tool workflows.

Fix git index.lock File Exists Error on Windows

If you see fatal: Unable to create 'index.lock': File exists. when running G...

Fix Nginx Configuration Test Failure After Adding Proxy Pass

You add a proxy_pass directive to an Nginx server block, run nginx -t, ...

Understanding and Fixing Git Detached HEAD State

If you've seen the message You are in 'detached HEAD' state in Git, you ...

How to Fix Docker Container Exits Immediately with Permission Denied

You start a Docker container, but it exits immediately. Running docker logs shows a ...

Fix Nginx Permission Denied for Static Files

Common Causes

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

Chrome Memory Use Too High on Mac? Here's How to Fix It

If your Mac slows down when Chrome is open, or you see high memory usage in Activity Monitor, you...