Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You start a Docker container and it exits immediately with a message like /bin/sh: 1: somec...

Fix Docker Compose 'Port Already Allocated' for MySQL
You run docker compose up and get an error like Error: Port 3306 is already al...

Fix 'npm run build Error Cannot Find Module'
You run npm run build and get an error like Error: Cannot find module 'som...

Fix Python venv Not Activating in CMD
You create a virtual environment with python -m venv myenv, navigate to the Scripts ...

Fix 'Port Already Allocated' Error in Docker Compose on Mac
When you run docker-compose up on a Mac, you may see an error like Bind for 0....

Fix 'package.json Not Found' After Cloning a Repository
Symptom
You clone a repository from GitHub (or another remote), change into the directory...