Grav cms what about the installation?

Question

CMS

Hello.
Tell me how to finish installing cms grav on ubuntu server 18.04. I got to this window:

Next, you need to install the admin module to be able to configure cms, but after sudo bin/gpm install admin
, no cms page is available ( ip/grav ip/admin https://...). bin/gpm index shows that the module is installed and other modules are installed. What else does he need?
(installed both Apache + php + cms and nginx + php + php and according to the instructions from the cms site) the same result.
Does anyone have their own instructions?