Cloudstack 4.15 not comptatible with Virtualbox/Ubuntu 20.04 (focal) ? #4595

Hi,

I try to make Cloudstack work as a lab in the same machine on VirtualBox with Ubuntu 20.04 using KVM (using those tutorial link1 and link2),

I tried the focal keyword to get the latest version

deb http://download.cloudstack.org/ubuntu focal 4.15

using sudo systemctrl status openstack-agent, I get the error unable to connect to remote: is there a server running on port 8250 (it is not listening using ss)
I made the debug :

0 - Network cloudbr0 is configured

1 - Checked the ports here, then verified that all of them are not blocked,

2 - SSH is configured as it should PermitRootLogin without-password and StrictModes yes

3 - kvm-ok returns KVM acceleration can be used (virsh list works)

4 - MySql is configured without errors after using cloudstack-setup-databases

5 - CloudArmor is well configured

6 - Everything seems well configured, but still get the http://192.168.1.85:8080/client/ not working (500 error)

Is there something I am missing ?