spice script 595

I´m using https://git.proxmox.com/?p=pve-manager.git;a=blob_plain;f=spice-example-sh;hb=HEAD as pve-virt-viewer_v2.sh on root@kvm01:~# pveversion pve-manager/5.0-30/5ab26bc (running kernel: 4.10.17-2-pve) but getting a 595 Invalid argument response. root@schreibzugang-1:~#...