Run Contao CMS behind a NGINX proxy with SSL enabled

// Add this code snippet into your /web/app.php  // respectively the index.php // x.x.x.x being the IP of your proxy. // You can also check this issue here for some more directions // https://github.com/contao/core/issues/8826 Request::setTrustedProxies(['x.x.x.x'], -1);