Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You open the integrated terminal in VS Code, type a command you know is installed, and get ...

Docker Compose Env File Not Being Read: Fixes
You set up a .env file for your Docker Compose project, but variables aren't bei...

How to Fix Git Push Rejected Non-Fast-Forward
You run git push and get an error like ! [rejected] main -> main (non-fast-...

Increase Git Timeout for Large Repositories
When cloning or fetching a large repository, Git may time out before the transfer completes. This...

How to Fix 'No Space Left on Device' in Docker on Ubuntu
If you see 'no space left on device' when running Docker commands on Ubuntu, the issue is...

Python Virtual Environment Not Activating: Common Fixes
You run source venv/bin/activate (or venv\Scripts\activate on Windows) ...