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

Nginx 502 Bad Gateway: A Practical Troubleshooting Guide

Seeing a 502 Bad Gateway from Nginx usually means the upstream server (like PHP-FPM, uWSGI, or a ...

How to Install SSL Certificate on Windows Server 2019

You have an SSL certificate file (usually .pfx or .cer) and need to install it on Windows Server ...

Fix 'Module Not Found' in Python Virtual Environments

VSCode Debugger Troubleshooting Checklist

When the VSCode debugger stops working, it's usually due to a misconfiguration, a missing extensi...

Fix Redis Server Not Starting: Port Already in Use

When you try to start Redis and get an error like Could not create server TCP listening soc...