SDX backups not being transferred back to MAS appliance

Backups seems to be started on SDX but not getting transferred to MAS. You can see the backups are created on the SDX but they are never transferred back to MAS server. Backups present on the SDX: You will see these errors in the MAS logs: mpsconfig.log: Thursday, 11 Jan 18 07:41:33.394 +0100 Err...