Xibo installed on an Ubuntu 18.04.3 LTS does not run for me

Hello everyone.
I have Xibo installed on an Ubuntu 18.04.3 LTS Mini PC and I have been trying to make it work for 2 days.
I have no experience with ubuntu.
When I open the Xibo Player it appears the screen with the Xibo logo.
I’ve left it on this screen for hours and nothing happens.
On the control panel it appears that the player is online.
I have tried several alternatives such as uninstalling and installing again and forcing the content update etc …
Need help.

The player does not leave this screen.

In the webUI, what is the player status?

On the player, if you open the status screen (press i) what is shown there?