Problems to install xibo 2.0.0

Hello everybody,
I have the version 1.8.12 without problems can install now without Docker. I copied the xibo content to a web space in / html / xibo /. Then I created a subdomain with the redirect to the subdomain. Now I come to the logon screen of xibo when I insert the following:
xibo.subdomain.de/

So, now I wanted to install the latest release 2.0.0. If I copy here the contents of xibo 2.0.0 in / html / xibo and then xibo.subdomain.de einge I do not come on the installation routine.

Can you help me here what is different here to 1.8.12 version ??

Greeting