Checklists for software errors, setup, and tool workflows.

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Latest checklists

When you see the error fatal: Unable to create 'path/.git/index.lock': File exists....

Fixing Python UnicodeDecodeError When Reading UTF-16 Files
You open a file in Python and get UnicodeDecodeError: 'utf-8' codec can't decod...

Git Merge Conflict: How to See the Diff Between Versions
When you run git merge and hit a conflict, Git pauses and marks the conflicting file...

Fix 'Python' Command Not Found After Reinstall on Windows
You reinstalled Python on Windows, but when you type python in Command Prompt, you g...

Fix npm ENOWENT Package.json Not Found on Mac
If you see 'ENOENT: no such file or directory, open /path/to/package.json' when running n...

How to Fix Python UnicodeDecodeError
When you encounter a UnicodeDecodeError in Python, it usually means you're tryin...