Configuring Netbeans on RaspberryPi with JavaFX

Question

I want to develop an application on Netbeans IDE, with JavaFX and work on remote mode with my RaspberryPi3.

What I have done

1. Installed jdk 1.8 with sudo apt install openjdk-8-jdk
2. Installed last version of JavaFX Embedded SDK port, changing these files:
   armv6hf-sdk/rt/lib/ext/jfxrt.jar -->jre/lib/ext/
armv6hf-sdk/rt/lib/arm/* --> jre/lib/arm/
armv6hf-sdk/rt/lib/javafx.platform.properties --> jre/lib/
armv6hf-sdk/rt/lib/javafx.properties --> jre/lib/
armv6hf-sdk/rt/lib/jfxswt.jar --> jre/lib/
3. Installed librxtx lirarie with sudo apt-get install librxtx-java
4. On netbeans IDE, I used remote platform with JRE Path /usr

The application (It's just a HelloWorld)

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class JavaFXApplication2 extends Application {
    
    @Override
    public void start(Stage primaryStage) {
        Button btn = new Button();
        btn.setText("Say 'Hello World'");
        btn.setOnAction(new EventHandler<ActionEvent>() {
            
            @Override
            public void handle(ActionEvent event) {
                System.out.println("Hello World!");
            }
        });
        
        StackPane root = new StackPane();
        root.getChildren().add(btn);
        
        Scene scene = new Scene(root, 300, 250);
        
        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
    
}

Verbose OutPut

SEVERE [global]
java.lang.NullPointerException


    at org.netbeans.modules.java.j2seembedded.project.Utilities.getTargetOSForRP(Utilities.java:326)
    at org.netbeans.modules.java.j2seembedded.project.RemoteBuildPropertiesProvider.createAdditionalProperties(RemoteBuildPropertiesProvider.java:95)
    at org.netbeans.modules.javafx2.project.JFXActionProvider.collectAdditionalBuildProperties(JFXActionProvider.java:294)
    at org.netbeans.modules.javafx2.project.JFXActionProvider.invokeAction(JFXActionProvider.java:185)
    at org.netbeans.spi.project.support.LookupProviderSupport$MergedActionProvider.invokeAction(LookupProviderSupport.java:271)
    at org.netbeans.modules.project.ui.actions.ProjectAction$2.run(ProjectAction.java:186)
    at org.openide.util.Mutex.doEvent(Mutex.java:1356)
    at org.openide.util.Mutex.writeAccess(Mutex.java:462)
    at org.netbeans.modules.project.ui.actions.ProjectAction.runSequentially(ProjectAction.java:183)
    at org.netbeans.modules.project.ui.actions.MainProjectAction$1$1.run(MainProjectAction.java:140)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
    at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)    
[catch] at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

The result
If I build it with the Proyect platform, I can normally develop my application, then copy the .jar to the raspberry using Filezilla and then execute on the raspberry.
But I can't work remotely. When I select the Pi as platform, It doesn't show anything on console and it only appears one notify saying "java.lang.NullPointerException". By the way, this is my first post

Result on Netbeans 8.2 and Apache NetBeans 12.0

  
Error: no se ha encontrado o cargado la clase principal javafxapplication1.JavaFXApplication1  
Causado por: java.lang.NoClassDefFoundError: javafx/application/Application
C:\Users\manol\Documents\NetBeansProjects\JavaFXApplication1\nbproject\remote-platform-impl.xml:144: The following error occurred while executing this line:
C:\Users\manol\Documents\NetBeansProjects\JavaFXApplication1\nbproject\remote-platform-impl.xml:102: Remote command failed with exit status 1
BUILD FAILED (total time: 4 seconds)  

Command used in RaspberryPI

cd '/home/pi/NetBeansProjects//JavaFXApplication1'; '/usr/bin/java'  -Dfile.encoding=UTF-8   -jar /home/pi/NetBeansProjects//JavaFXApplication1/dist/JavaFXApplication1.jar

Error in RaspberryPI

Error: no se ha encontrado o cargado la clase principal javafxapplication1.JavaFXApplication1
Causado por: java.lang.NoClassDefFoundError: javafx/application/Application

Error creating JavaFX Project enter image description here
Error changing platform
enter image description here
enter image description here