1st OP
pvecm updatecert
systemctl stop pveproxy
systemctl start pveproxy
2nd OP
systemctl stop pve-cluster
systemctl stop corosync
pmxcfs -l
killall pmxcfs
systemctl start pve-cluster
pvecm expected 1
pvecm updatecert
systemctl stop pveproxy
systemctl start pveproxy
This works for me, i hope...