Cockpit not showing virtual machines

I've just installed Cockpit on my OMV server (Raspberry Pi 4) via OMV-Extras. I've logged in as root, well no virtual machine section is showing up.

Thanks for reply. I've installed cockpit-machines package. Virtual Machines section showed up, but unfortunately I cannot create a new VM because virt-install package also needs to be installed, which I cannot find via apt package manager.

I didn't see any errors during installation. Well, I reinstalled Cockpit and cockpit-machines package. Here's the log.txt.

Manage to solve the problem by installing virtinst package.

EDIT: Unfortunately, I get error message when creating or importing VM.

error: failed to get emulator capabilities 

error: invalid argument: unable to find any emulator to serve 'armv7l' architecture
ERROR    Host does not support any virtualization options