Unable to Connect to a System in SAP Screen Personas "System Selection"

Hi, my name is Christian.

I am trying to configure SAP Screen Personas.

When I launch the mainapp page, the system is prompting for user credentials.

Then I get "System Selection" screen where the system I have configured is listed on the left.

But when I click that it is not showing anything.

please see the screenshot below.

Any help to resolve this and go ahead is highly appreciated.

This XML, is OK in file_access_2 and file_access1 ??