Soo If you’re trying to generate PCG on Static Meshes, what is required is to make the static mesh ‘Allow CPU Access’. Pretty much open the asset(s) and checkbox ‘Allow CPU Access’.
Had to find that out to finally find a message like this on a package build
StaticMesh bAllowCPUAccess must be set to true to read mesh data at Runtime
Hope this helps out anyone trying to figure this out