Ryzen 9 5900 not 5900x

[KoiaKoia]

I am getting this when trying to run hashcat -b :

OpenCL API (OpenCL 1.2 pocl 1.6, None+Asserts, LLVM 9.0.1, RELOC, SLEEF, DISTRO, POCL_DEBUG) - Platform #1 [The pocl project]
=============================================================================================================================
* Device #1: pthread-AMD Ryzen 9 5900 12-Core Processor, 29979/30043 MB (8192 MB allocatable), 24MCU

Benchmark relevant options:
===========================
* --optimized-kernel-enable

Hashmode: 0 - MD5

clBuildProgram(): CL_BUILD_PROGRAM_FAILURE

error: unknown target CPU 'generic'


I am wondering if it is because the Ryzen 9 5900 has not been added somewhere since it is OEM only and has seen limited availability?

Just wondering if this is an issue or I have something else going wrong here.

Thanks
KK