Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You're running a Python script that reads a file, and it crashes with MemoryError

Python Requests Timeout Best Practices for Reliable Apps
When your Python script using the requests library hangs indefinitely on a slow or u...

Fix Windows 11 Installation Assistant Stuck at 99%
You're upgrading to Windows 11 using the Installation Assistant, and it gets stuck at 99% for...

Recover Lost Changes After Git Detached HEAD
You've made several edits, then checked out an old commit or tag, and now Git says you're...

Fix Git index.lock File Exists Permission Denied Error
You're in the middle of a Git operation and suddenly you see:
fatal: Unable to ...

Fix 'Python Command Not Found' in Git Bash on Windows
When running Python in Git Bash on Windows, you may see bash: python: command not found