Checklists for software errors, setup, and tool workflows.

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Fix Git 'index.lock' File Exists Error in IntelliJ

If you see an error like fatal: Unable to create 'project/.git/index.lock': File ex...

Fix Nginx Upstream Connection Refused in Docker
You have Nginx running, either on the host or in a container, proxying to another Docker containe...

Chrome Sync Not Working on Mac: Fixes That Actually Work
You open Chrome on your Mac, expecting your bookmarks and passwords to be there, but nothing sync...

Bluetooth Icon Missing in Windows 11: How to Restore It
You open the system tray on Windows 11 and the Bluetooth icon is gone. Even if Bluetooth is turne...

Fix Git Push Rejected Non Fast Forward Force
You try to push your local commits to a remote repository and get an error like ! [rejected...

Fix pip Externally Managed Environment on Debian 12
If you're on Debian 12 and get error: externally-managed-environment when using ...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Git 'index.lock' File Exists Error in IntelliJ

Fix Nginx Upstream Connection Refused in Docker

Chrome Sync Not Working on Mac: Fixes That Actually Work

Bluetooth Icon Missing in Windows 11: How to Restore It

Fix Git Push Rejected Non Fast Forward Force

Fix pip Externally Managed Environment on Debian 12

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