Migration P2V via Backup: restore error

NethServer Version: 7.9
Module: Backup

Retrieving old server. After update and reboot, backup on the usual directory. Duplicity answer “all good, buddy”.

Repurpoused server, currently doing something else.
Installed NS 7.9 as ESXi 8.0 guest (bummer, do not support UEFI safe boot. Whatever). Installed, reboot.
Installed some packages from command line (mc, alpine, nano, screen). Updated using yum update, newer kernel and such.
Accessed to Cockpit, setup the hostname. Extracted backupconfig.tar.xz from backup location. Uploaded as configuration backup. Restore tried several times.

No way to restore, always this command fail at 50% (sort of)
echo '{"action":"restore-backup-config","data":"u01","InstallPackages":"enabled","SkipNetwork":"disabled","remap":{"enp3s0":"ens34"}}' | /usr/bin/setsid /usr/bin/sudo /usr/libexec/nethserver/api/system-backup/execute | jq

Currently network adapter is DHCP client, updated nicely all the stale ISO.

The old server, where the backup comes from, was using packages from third party repositories?

Note: I don’t know whether the reported error comes at the installpackages step or it corresponds to a previous step.

I don’t remember, but I’d vote for no.

What does that command spits out?

It’s the command suggested to “extract” from the restore error.
I copied via cockpit, then i put it there.