Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you click the terminal panel in VS Code and nothing happens, or it opens a blank shell instead...

You try to run a Git command and see fatal: Unable to create 'path/.git/index.lock'...

Fix 'nginx: configuration test failed unexpected end of file'
When running nginx -t or nginx -t -c /path/to/nginx.conf, you might see...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer
When you run git clone or git pull and see an error like "S...

Fix Nginx Upstream Connection Refused Socket Error
When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Fix Node.js Heap Out of Memory Error in PM2
If you're running a Node.js application under PM2 and seeing FATAL ERROR: CALL_AND_RETR...