Checklists for software errors, setup, and tool workflows.

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Latest checklists

When you encounter a merge conflict in Git, the default conflict markers (<<<<<<...

When you run npm install or npm start and see package.json not fo...

Fix 'Permission Denied' When Running pip install --user
If you see Permission denied when running pip install --user somepackage

How to Manually Remove a Stuck Git index.lock File
If Git operations suddenly fail with an error like fatal: Unable to create 'path/.git/i...

How to Downgrade Node.js for Package Compatibility
You install a package and get errors like requires Node.js >= 16, but you have 18...

Fixing Cloudflare 522 Error: CDN Configuration Steps
If you see a 522 Connection Timed Out error from Cloudflare, it means your CDN (...