Sep 17 20:56:08.362304 spice-vdagent[1360]: err: Missing virtio device '/dev/virtio-ports/com.redhat.spice.0': No such file or directory
Is this in a spice enabled vm, or on bare hardware ? If this is in a spice enabled vm, something is likely wrong with your vm config. If this is on bare hardware (or a non spice, ie vnc using vm), then this is a false positive, which has been fixed in spice-vdagent-0.14.0-5.fc21 .