← All Kali Issues
Nginx
502 Bad Gateway
S Service
High
🔴 Error Message
Nginx returning 502 error
📖 What This Means
Backend application not responding.
🔧 Step-by-Step Fix
- Check backend: systemctl status php*-fpm
- Check socket: ls /run/php/
- Check logs: tail /var/log/nginx/error.log