CUPS - libpam.so.1 not found

[Barry Skidmore]

I am running 5.1-RELEASE-p11 and am receiving the following error when
the system boots, related to CUPS not being able to start the scheduler:

Local package initilization:
/usr/libexec/ld-elf.so.1: shared object :"libpam.so.1" not found
cups unable to start scheduler

Doing a Google search I have been unable to find how to install this
missing file.

Thanks,
Barry