403 Forbidden

Hallo,

i just installed Jitsi on my Debian 10, and it seems to run on my Apache2.
I´m getting the index page, but when i create a meeting and then try to join the created meeting im getting

Forbidden
You don’t have permission to access this resource.
Apache/2.4.41 (Debian) Server at my Domain

Something i miss to configure??

Greeting
Tim