Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You try to run a Git command and see fatal: Unable to create 'path/.git/index.lock'...

Docker: No Space Left on Device After Pulling Image
You pull a Docker image and get no space left on device. The image might be small, b...

Fix Chrome Access Violation Error on Windows 7
If you see an "access violation" error in Chrome on Windows 7, it usually means Chrome tr...

Chrome Sync Not Working on School Chromebook: Fixes
If your Chrome browser isn't syncing bookmarks, passwords, or history on a school Chromebook,...

Fix Windows 11 Update Stuck at 0% with Low Disk Space
You're trying to install a Windows 11 update, but it's stuck at 0% for a long time. One f...

Fix npm run build Failed on macOS: Common Causes and Solutions
If you're on macOS and npm run build fails, you're not alone. This command o...