NullPointerException adding event in the MontSheetView

[MattTheCuber]

Adding an event in the MonthSheetView through the context menu with click behavior is not set to PERFORM_SELECTION (the default) throws a NullPointerException.

Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: date
        at java.base/java.util.Objects.requireNonNull(Objects.java:246)
        at java.base/java.time.LocalDateTime.of(LocalDateTime.java:376)
        at java.base/java.time.ZonedDateTime.of(ZonedDateTime.java:267)
        at com.calendarfx.view.MonthSheetView.lambda$createContextMenu$3(MonthSheetView.java:142)

Simple workaround for now is this:

calendarView.getYearPage().getMonthSheetView().setClickBehaviour(ClickBehaviour.PERFORM_SELECTION);