Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you use SourceTree and see an error message like fatal: Unable to create 'path/to/.g...

Fix 'Python Command Not Found' in Anaconda on Windows
If you installed Anaconda on Windows but typing python in Command Prompt returns

Fix VS Code Terminal Not Opening WSL
You open VS Code, switch to the integrated terminal, select WSL as your default shell, and nothin...

How to Merge a Git Detached HEAD Back to Master
If you see a message like 'You are in 'detached HEAD' state' after checking out a...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer
If you see fatal: unable to access 'https://...': SSL certificate problem: unable t...

Fix Cloudflare 521 Error: SSL Configuration Steps
If you see a Cloudflare 521 error, it means Cloudflare can't establish a TCP connection to yo...