Ocean Simulation | Community tutorial Issues

Hi, I wanted to recreate this Niagara Ocean Tutorial - Ocean Simulation | Community tutorial

So I followed this tutorial - https://www.youtube.com/watch?v=-bYVnBAvomo

I ran into problems on the 3rd video when finished with Niagara system, it wouldn’t compile, please see pic 2. If I unchecked the last FX_Ocean_Water_Roughness_Integrator then it compiled. Eventually I deleted this project and downloaded the sample project from the Ocean Simulation project files from Unreal Community.
Same issue, it wont compile, please see other screenshots. Can anybody please help me. Im using 5.32 version. Thanks