Checklists for software errors, setup, and tool workflows.

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Latest checklists

When you run a Docker build and see an error like context canceled or no space...

Fix 'python' Command Not Found on Windows 10 with Python 3.10
After installing Python 3.10 on Windows 10, you might type python in Command Prompt ...

How to Update Node Version for Package Compatibility
When you run npm install and see warnings about engine incompatibility or errors lik...

Fix Git Merge Conflicts with Deleted Files
You're in the middle of a merge and git stops with a conflict. One side deleted a file, the o...

Fix VS Code Git Authentication Failed Keychain Error
If you see "Git authentication failed" in VS Code on macOS, the problem is often the macO...

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 ...