Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see an error like fatal: Unable to create 'project/.git/index.lock': File ex...

Fix err_name_not_resolved Caused by Chrome Extensions
If you see err_name_not_resolved in Chrome, a misbehaving or conflicting extension c...

Fix Permission Denied on chmod in VS Code Terminal
You're running chmod in the VS Code integrated terminal and seeing 'permissi...

Fix Git Push Rejected Non Fast Forward Error
You run git push and see: ! [rejected] main -> main (non-fast-forward)

How to Create a package.json for Your npm Project
If you're starting a Node.js project, you'll need a package.json file. This ...

Fix Python Memory Error When Loading Large JSON Files
If you've tried to load a large JSON file into Python and hit a MemoryError, you...