Unable to complete install: 'Couldn't create storage volume 'ubuntu16.04.qcow2': 'internal error: unable to parse qemu-img output ''''

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 90, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/create.py", line 2277, in _do_async_install
    guest.start_install(meter=meter)
  File "/usr/share/virt-manager/virtinst/guest.py", line 487, in start_install
    dev.setup(meter)
  File "/usr/share/virt-manager/virtinst/devicedisk.py", line 861, in setup
    vol_object = self._storage_backend.create(meter)
  File "/usr/share/virt-manager/virtinst/diskbackend.py", line 439, in create
    return self._vol_install.install(meter=progresscb)
  File "/usr/share/virt-manager/virtinst/storage.py", line 809, in install
    "'%s': '%s'" % (self.name, str(e)))
RuntimeError: Couldn't create storage volume 'ubuntu16.04.qcow2': 'internal error: unable to parse qemu-img output '''