sudo virsh -c qemu:///system define Whonix-Gateway*.xml error: Failed to define domain from Whonix-Gateway-Xfce-17.0.3.0.xml erDomain configuration does not support video model 'virtio'

KVM
1

sudo virsh -c qemu:///system define Whonix-Gateway*.xml
error: Failed to define domain from Whonix-Gateway-Xfce-17.0.3.0.xml
error: unsupported configuration: domain configuration does not support video model ‘virtio’

2

which distro is your host?