Knowledge base for software setup, errors, and daily tool work.

Fix git index.lock File Exists Error on Windows

If you see fatal: Unable to create 'index.lock': File exists. when running G...

How to Recover from Detached HEAD in Git

You're working in a Git repository and suddenly see a message like 'You are in 'detac...

Fix Chrome Memory Spikes When Watching Videos

You're watching a video in Chrome, and suddenly the system slows down, fans spin up, or tabs ...

Nginx Upstream Connection Refused: Diagnosis and Fixes

When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...

Fix Docker Volume Permission Denied for Postgres

Fix 'Permission Denied' When Deleting Files in VS Code

You try to delete a file or folder in VS Code's Explorer, but get an error: Permission ...