(help) problems with whonix workstation image import

The Gateway xml worked fine but when I try to import the Workstation with:

virsh -c qemu:///system define Whonix-Workstation*.xml

Here is the error I see:

error: Failed to define domain from Whonix-Workstation-XFCE-16.0.3.7.xml
error: unsupported configuration: unknown codec type ‘output’

can somebody give me a precise way or explanation on how to fix this? please