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

Docker Nginx 502 Bad Gateway: Memory Limit Fix

You're running Nginx in Docker as a reverse proxy, and suddenly you see 502 Bad Gateway error...

Fix npm install Permission Denied on Shared Hosting

Fix Chrome ERR_CONNECTION_RESET After Router Reboot

If you see ERR_CONNECTION_RESET in Chrome after rebooting your router, you'r...

Cloudflare SSL Full vs Flexible: Troubleshooting Mixed Content & Errors

If your site shows broken padlocks, mixed content warnings, or SSL errors after changing Cloudfla...

Fix 'port already allocated' Error in Docker Compose

You run docker compose up and see port is already allocated. This means...