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

npm package.json Not Found After npm init

You run npm init, answer the prompts, and then try to install a package or run a scr...

Fixing Nginx Upstream Connection Refused in Load Balancing

When Nginx load balancing returns upstream connection refused, it means one or more ...

Fix git index.lock File Exists Error on Windows

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

Fix Docker Volume Permission Denied for Non-Root User

You run a Docker container as a non-root user and get a permission denied error when trying to wr...

Fix Chrome Black Screen in Remote Desktop with Hardware Acceleration Off

You're remoted into another machine, open Chrome, and the screen goes black—or the browser wi...

Checklist for Troubleshooting Nginx Permission Denied Errors

Understanding the Problem

When Nginx returns a 403 Forbidden or logs an error like ...