migrating proxmox host

Problem: I am in the process of setting up a proxmox cluster with two servers, now I have the problem that there is a vm that does not allow me to migrate it, all other vms worked without problems, does anyone know a solution? Error when migrating: Hardware Setup:

Hello everyone, what is the best way to exchange the disk on which proxmox is currently installed? actually installed on single 1 TB SSD, but just using partition of 150 GB want to move to 2 mirrored 400 GB SSDs Don't care if it the new setup is ZFS or LVM The actual setup: a couple of...