Dialogic HMMP for Linux 4.1 Update 236 install on RHEL 7.5

Getting the below error while installing the Dialogic HMP for LInux 4.1 Update 236 on a RHEL 7.5 64 bit:

The 32-bit libstdc++ library, required by HMP, was not found.
Please correct the issue before attempting HMP installation again.

How do I install the 32 bit libstdc++ library on RHEL 7.5 64 bit server? Any help would be appreciated?

Thanks

Ashok