opr-pgctl.sh -restore fails

Running OBM 2018.05 on two systems.  I took a backup of my primary system with opr-pgctl.sh -force -z -backup backup.zip. 

I copied that to a test system running 2018.05.  I stopped everything.  I started the restore.  At 71% Restore the command failed. The opr-pgctl.log say Restore command failed, stream closed and lines of Java dump.  Cannot I not restore a DB from one system to another?  I have plenty of space on the volume.

Any idea what the problem could be?

Thanks,
Mel