Checklists for software errors, setup, and tool workflows.

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Latest checklists

When running git rebase, you may see an error like fatal: Unable to create ...

Fix Git 'index.lock' File Exists Error in SourceTree
If you use SourceTree and see an error message like fatal: Unable to create 'path/to/.g...

Fix Nginx Configuration Test Failed on Ubuntu
When you run nginx -t on Ubuntu and get an error, Nginx won't reload or restart....

Fix Missing Taskbar Icons on a Second Monitor
If you've connected a second monitor and the taskbar icons aren't showing up on it, you&#...

Fix Python Permission Denied When Installing Packages on Windows
You run pip install somepackage on Windows and get a PermissionError

Python venv Not Working on Windows 10: Common Fixes
If you're trying to create or activate a Python virtual environment on Windows 10 and it'...