VM Snapshot's Disks view shows illegal status in RHV Admin Portal

Issue

• RHV Admin Portal shows one illegal disk for snapshot.

• In the RHV Admin Portal, the 'Virtual Machines' -> <VM> -> Snapshots -> Disks (in lower right pane) -> Status is Illegal.

• The image and snapshot status in the RHV Admin Portal is 'OK'.

• The imagestatus for all of the images of the disk in the images table in the RHV database is 'ok'.

• The snapshot status in the RHV database is 'OK'.