Checklists for software errors, setup, and tool workflows.

Fix 'git pull failed index.lock file exists' Error

When running git pull, you may see an error like:

fatal: Unable to create &#...

Docker Pull Access Denied on Mac M1: Step-by-Step Fix

If you're running Docker on an Apple M1 Mac and see 'access denied' when pulling an i...

How to Fix pnpm ERR! Unsupported URL Type

When using pnpm, you may encounter an error like pnpm ERR! Unsupported URL Type. Thi...

Fix Node.js Heap Out of Memory in Docker Containers

If your Node.js application running in a Docker container crashes with a "JavaScript heap out...

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 ...

Chrome Certificate Error: Not Secure Site Workaround

You're trying to reach a site and Chrome shows a full-page warning: “Your connection is not p...