hmm that’s strange. It seems your /boot folder is completely empty and bootFS not being mounted correctly. Usually your system should not boot that way 
Can you check lsblk -o name,fstype,label,size,ro,type,mountpoint,partuuid,uuid
probably issue is on your fstab as it is missing the part for RootFS and BootFS. Can you share cat /etc/fstab. As well can you share fstab from your backup