Same on all nodes.
What I found is that HYPER06 is missing in /etc/pve/.members
root@HYPER04:~# cat /etc/pve/.members
{
"nodename": "HYPER04",
"version": 55,
"cluster": { "name": "DEMAX", "version": 9, "nodes": 5, "quorate": 1 },
"nodelist": {
"HYPER02": { "id": 2, "online": 1, "ip"...