Error starting domain: internal error: qemu unexpectedly closed the monitor: 2023-04-07T22:43:23.828685Z qemu-system-x86_64: -device {"driver":"vfio-pci","host":"0000:18:00.0","id":"hostdev0","bus":"pci.6","addr":"0x0"}: vfio 0000:18:00.0: group 4 is not viable
Please ensure all devices within the iommu_group are bound to their vfio bus driver.

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 72, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 108, in tmpcb
    callback(*args, **kwargs)
  File "/usr/share/virt-manager/virtManager/object/libvirtobject.py", line 57, in newfn
    ret = fn(self, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/object/domain.py", line 1402, in startup
    self._backend.create()
  File "/usr/lib/python3.10/site-packages/libvirt.py", line 1373, in create
    raise libvirtError('virDomainCreate() failed')
libvirt.libvirtError: internal error: qemu unexpectedly closed the monitor: 2023-04-07T22:43:23.828685Z qemu-system-x86_64: -device {"driver":"vfio-pci","host":"0000:18:00.0","id":"hostdev0","bus":"pci.6","addr":"0x0"}: vfio 0000:18:00.0: group 4 is not viable
Please ensure all devices within the iommu_group are bound to their vfio bus driver.