Jumbo Hotfixes are only for Gaia OS.
Have you checked GUI Clients in cpconfig menu?
sk122612 says :
The issue is relevant to the below scenarios:
- Upon clean install of Security Management / Standalone / Multi-Domain Server R77.30 or below after January 24th 2018.
- Upon adding CMA on Multi-Domain Server below 77.30 Jumbo Hotfix take 143 (Inlcuding previous versions) .
ICA certificate generation fails due to code issue (that is now fixed), causing connectivity to fail.
There were several threads here about the same thing. For it you need to install a hotfix. For Gaia R77.30 it is included in Jumbo Hotfix. For other version it could be provided by TAC. For R77.30 Gaia it is even included into updated base images: Check Point R77.30
Why are you even using SPLAT R77.30? It would be much better to install Gaia R77.30.