Error in module system when registering controlsFX validator for combo box in JavaFX project

I'm trying to register ControlsFX validator for a ComboBox in JavaFX. Then, I got the below error relating to the module system. When I try to open javafx.scene package to the org.controlsfx.controls module, it also resulted in an error. I'll add all the codes and errors I got below.


This is my code which is causing the error.
ValidationSupport validationSupport = new ValidationSupport();
validationSupport.registerValidator(prefixCombo, Validator.createEmptyValidator("Combobox selection required!"));



This is the error I got when running the project.
Exception in thread "JavaFX Application Thread" java.lang.reflect.InaccessibleObjectException: Unable to make protected javafx.collections.ObservableList javafx.scene.Parent.getChildren() accessible: module javafx.graphics does not "opens javafx.scene" to module org.controlsfx.controls
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)



This is my current module-info.java file
module system {
requires javafx.controls;
requires javafx.fxml;
requires jakarta.persistence;
requires org.hibernate.orm.core;
requires MaterialFX;
requires org.slf4j;
requires de.jensd.fx.glyphs.fontawesome;
requires static lombok;
requires org.controlsfx.controls;
requires javafx.graphics;

opens com.example.system to javafx.fxml, org.controlsfx.controls;
exports com.example.system;
exports com.example.system.controller;
opens com.example.system.controller to javafx.fxml, javafx.graphics;
opens com.example.system.entity to org.hibernate.orm.core;
opens com.example.system.tm to javafx.base;
}



I tried adding opens javafx.scene to org.controlsfx.controls; to module-infor.java.
Then, resulted in another error Package not found: javafx.scene


Thank you all in advance!!