CesiumEventBuilder importet from MapEventsManagerServicenot found

[YaariBoaz]

Hello,
I'm trying to import the MapEventsManagerService, that works fine, but there's a runtime error with the import inside MapEventsManagerService: CesiumEventBuilder

R3InjectorError(AppModule)[CesiumEventBuilder -> CesiumEventBuilder -> CesiumEventBuilder]:
NullInjectorError: No provider for CesiumEventBuilder!

Any ideas why this issue occurs?