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....

How to Disable pip's Externally Managed Environment Warning
If you see the error error: externally-managed-environment when trying to install Py...

Fix Node Engine Requirement Not Satisfied Error
You run npm install and see: engine "node" is incompatible with this m...

Fix Nginx Configuration Test Failed: Duplicate Listen Error
When running nginx -t to test your configuration, you may see an error like "...

Git Detached HEAD vs Attached HEAD: What It Means and How to Fix
If you've seen the message "You are in 'detached HEAD' state" while using Git...

Fix Edge Sync Stuck on Sign-In Loop
You open Microsoft Edge, try to sign in to sync your data, and it keeps looping back to the sign-...