TL;DR The Welcome to nginx! error (also known as the nginx default page error) when adding a second WordPress site almost always stems from Nginx failing to route requests to your new directory. The fastest fixes are:Remove the default Ngi...

Is your WordPress site showing 'Not Secure'? Our complete 2026 guide shows you how to install an SSL certificate and fix common SSL errors like NET::ERR_CERT_INVALID and mixed content warnings. Step-by-step solutions inside.