VMware Live Site Recovery 9.x
The error occurs due to an issue with the Content Library service in vCenter. This service is responsible for managing the deployment of OVF packages.
Try restarting the Content Library service....
Option 1. To restart the service via cmdline,
Option 2. Restart the service thru UI VAMI Services.
Option 3: Reboot the vCenter Server Appliance. This will gracefully restart all automatic services and their dependencies.