VNC has been configured on this system by Cloudmin, but the VNC server on port 5904 on host system host.namedremoved.com is

I am unable to get a graphic console in cloudmin. It gives me this error message below:

VNC has been configured on this system by Cloudmin, but the VNC server on port 5904 on host system host.namedremoved.com is available.

I am able to VNC into the kvm. However, I am not able to do so from within Cloudmin under System State - > Graphical Console. It gives me the same error message for any kvm. Disabling the firewall on the host didn't make any difference. In the past, I have had to make changes to the cloudmin-kvm file because the kvm wouldn't boot properly. The websocket and vnc ports differ between the kvm's.

Any thoughts? Not sure what to try next.

Richard