Problem with restore backup

When I want to restore a backup of my LVM machine I go to “restore backup” I choose the location and I do “Restore Now” but nothing happens, the button is as inactive.
and if I go through the next order:
cloudmin restore-systems --host myvirualmachine --source /media/USBDISK/28-11-2018/
I have a message like: at startup I have:
Kernel panic - not syncing: No init found

What do you think of that?

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