Javafx JFoenix：当我添加JFXProgressBar时，程序抛出异常

我尝试添加JFXProgressBar组件，但出现以下异常：

Exception in thread "JavaFX Application Thread" java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
    at javafx.fxml/javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1787)
    at javafx.fxml/javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1670)
    at javafx.base/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
.... (I skipped some lines for visibility purposes)
Caused by: java.lang.IllegalAccessError: class com.jfoenix.skins.JFXProgressBarSkin (in unnamed module @0x5680343f) cannot access class com.sun.javafx.scene.NodeHelper (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.scene to unnamed module @0x5680343f
    at com.jfoenix.skins.JFXProgressBarSkin.<init>(JFXProgressBarSkin.java:64)
    at com.jfoenix.controls.JFXProgressBar.createDefaultSkin(JFXProgressBar.java:75)
    at javafx.controls/javafx.scene.control.Control.doProcessCSS(Control.java:897)
    at javafx.controls/javafx.scene.control.Control$1.doProcessCSS(Control.java:89)
    at 
...

Simple.fxml：

<?xml version="1.0" encoding="UTF-8"?>

<?import com.jfoenix.controls.JFXProgressBar?>
<?import javafx.scene.layout.AnchorPane?>


<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1">
   <children>
      <JFXProgressBar layoutX="200.0" layoutY="199.0" />
   </children>
</AnchorPane>

请..感谢您的回复，我更新了问题以包含最小可重复性示例错误消息告诉您该怎么做：module javafx.graphics不将com.sun.javafx.scene导出到未命名模块-照字面理解并转换为运行时参数

--add exports javafx.graphics/com.sun.javafx.scene=ALL-unnamed

非常感谢，您的解决方案有效：）请..感谢您的回复，我更新了问题以包含最小可重复性示例错误消息告诉您该怎么做：module javafx.graphics不将com.sun.javafx.scene导出到未命名模块-照字面理解并转换为运行时参数

--add exports javafx.graphics/com.sun.javafx.scene=ALL-unnamed

非常感谢，您的解决方案正在运行：）

<?xml version="1.0" encoding="UTF-8"?>

<?import com.jfoenix.controls.JFXProgressBar?>
<?import javafx.scene.layout.AnchorPane?>


<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1">
   <children>
      <JFXProgressBar layoutX="200.0" layoutY="199.0" />
   </children>
</AnchorPane>