Freeze - "Configuring-management-console-module-appcenter(amd64)"

Hi,
I am on going to evaluating Univention for our small office.
First Installation is working with no issues using RAID1 HDD
on the second installation I have an issues,
the installation process is freeze on
“Configuring-management-console-module-appcenter(amd64)”

And, the error messages while accessing the server from the browser:

The reason to having a second UCS is to evaluate how to migrate UCS to UCS.

I had been trying also installing on Proxmox, and have same issues

Please someone can help me

thank you

Hi,
are there someone that can help me please.
I had been trying re-install and re-install with many ways,
and also changing the media installer with new iso, new download
I still facing same problem.

regards,