Relax-and-Recover fails to create backup when used along with netbackup

Issue

When running Relax-and-Recover (ReaR) from a terminal prompt or via crontab the user sees messages like these:

There are binaries or libraries in the ReaR recovery system that need additional libraries
/usr/openv/lib/plugins/libauthpam_t.so requires additional libraries
        libvrtsat_t.so => not found
ReaR recovery system in '/tmp/rear.i52zMtTBaDBc7BJ/rootfs' needs additional libraries, check /var/log/rear/rear-roqnbu001v01.log for details

Messages like this are seen in the log files at /var/log/rear/

2019-07-23 07:36:25.055210979 There are binaries or libraries in the ReaR recovery system that need additional libraries
2019-07-23 07:36:25.060242919 /usr/openv/lib/plugins/libauthpam_t.so requires additional libraries
2019-07-23 07:36:25.067288528   linux-vdso.so.1 =>  (0x00007ffd17dcc000)
        libvrtsat_t.so => not found