Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see node-sass build failed python not found when running npm install

Git Merge Unrelated Histories Without Losing Commits
You've cloned a repo, added a new remote, and now you need to merge two branches that don'...

Git index.lock File Exists Even After Deleting: Fixes
You delete the .git/index.lock file, but Git still says it exists. This can happen d...

Rebuild Windows Search Index Without Losing Data
If Windows Search stops returning results or behaves slowly, rebuilding the index often fixes it....

Setting Python Requests Timeout Per Request: Practical Guide
When a Python script using the requests library hangs indefinitely on a slow API, yo...

Nginx Permission Denied After Restart: Fixes That Work
After restarting nginx, you might see errors like connect() to unix:/var/run/php-fpm.sock f...