Release : 20.2
Component : Spectrum Core / SpectroSERVER
Windows : 2019
The issue is because of the compatibility of spectrum 10.4.2 & windows 2019.
As per the instructions from below document, it says upgrade to this version if deemed necessary.
https://techdocs.broadcom.com/us/en/ca-enterprise-software/it-operations-management/spectrum/10-4-2/installing-and-upgrading/fresh-install/system-requirements-for-installing-ca-spectrum/spectroserver-and-oneclick-requirements/system-requirements-for-windows.html