Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You run pip install and see a wall of text about DependencyConflict or ...

You run git push and see: ! [rejected] main -> main (non-fast-forward)

Fix Nginx 'Permission Denied' Upstream Errors
When Nginx logs permission denied while connecting to an upstream (e.g., a Unix sock...

Configure Git HTTP Timeout to Avoid Clone Failures
If your Git clone or fetch operations time out with errors like fatal: unable to access ...

Fix Git 'index.lock file exists' Error
When you see the error fatal: Unable to create 'path/.git/index.lock': File exists....

Fix Git Merge Conflicts with Deleted Files
You're in the middle of a merge and git stops with a conflict. One side deleted a file, the o...