qemu/kvm spice console problem
When I try to start a virtual machine, I get the error:
Error connecting to graphical console:
Error opening Spice console, SpiceClientGtk missing
on whichever VM I try to start.
The Virtual Machine Manager shows the VM is running but I can't connect.
The system running the VMs is Debian/Stretch while my workstation is
Debian/Buster. This worked until fairly recently (I don't start up the
VMs too often, but I'm sure I did sometime in the last month). So far as
I can tell, spice is running on both the host and client machines.
Any ideas on what's changed to cause this problem?