Error starting minikube with kvm2 driver, who knows what's wrong?

Question

virtual box

Installed a virtual machine (Fedora 32 workstation) on top of Ubuntu 20.04 via VirtualBox. Vt-x virtualization works on Fedore, enabled via VirtualBox settings for CPU of VM. I installed KVM-2 and qedu on Fedor, all according to the manual. Gave Fedora 60 Gb / 8 Gb of RAM. I run it on Fedora: $ minikube start --memory 4096 --vm-driver=kvm2everything downloads fine, after starting the virtual machine, a whole series of messages appear like:

libmachine error dialing tcp: tcp 22: connection refused

and then comes out at the end

failed to start host: provsion: connection is shutdown