Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You're reading a file in Python and get:

UnicodeDecodeError: 'charmap' ...

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...

Node.js Heap Out of Memory Troubleshooting Checklist
When a Node.js process crashes with FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - Ja...

Fix npm run build Failure from Missing Env Variables
You run npm run build and get an error like Error: Missing required environmen...

Fix VS Code Permission Denied After Update
After updating Visual Studio Code, you might see 'permission denied' errors when trying t...

Fix Git 'index.lock' File Exists Error on Linux
When working with Git on Linux, you might see an error like:
fatal: Unable to creat...