Thanks. virt-viewer is installed. Only spice log I see is spice-vdagent.log. Here is it's contents:
May 20 19:00:14.272398 spice-vdagent[2041]: err: Missing virtio device '/dev/virtio-ports/com.redhat.spice.0': No such file or directory
May 20 19:00:29.257189 spice-vdagent[2201]: err: Missing virtio device '/dev/virtio-ports/com.redhat.spice.0': No such file or directory
May 20 19:08:14.007938 spice-vdagent[2836]: err: Missing virtio device '/dev/virtio-ports/com.redhat.spice.0': No such file or directory
May 20 19:10:08.630260 spice-vdagent[1964]: err: Missing virtio device '/dev/virtio-ports/com.redhat.spice.0': No such file or directory
May 20 19:10:23.108980 spice-vdagent[2130]: err: Missing virtio device '/dev/virtio-ports/com.redhat.spice.0': No such file or directory