Cannot compile TornadoFx project in intellij

Hi I’ve started to learn TornadoFx for my Kotlin Project, but I don’t understand why Intellij can’t complie

please help me

Because you used java 11 or newer and it does not include JavaFX. Here is demo build for tornadoFX: GitHub - altavir/fx-demo: TornadoFX build and application demo.

all right! I tried to use java 8 and it works! thank you!!