Installer: fields for "admin_gateway" and "auth_gateway" not visible

Describe the bug

I am trying to install Castopod on a system with Debian 11, Apache 2.4.56 and PHP 8.2.

I followed the steps described here: https://docs.castopod.org/getting-started/install.html

When running the command https://my-website/cp-install, only the fields for "Hostname" and "Media Base" are shown, but not the fields for "admin_gateway" and "auth_gateway". So I cannot fill in the required data and am getting an error when I am trying to continue the installation of castopod.