Błąd przy zmianie widoku javafx hibernate

Witam,

mam problem, tworzę "Menadżer zadań" i utknąłem przy zmianie widoku podczas przyciśnięcia buttonu Dodaj Uzytkownika, treść błędu:

 Exception in thread "JavaFX Application Thread" java.lang.NullPointerException
	at controllers.PanelGlownyController$1.handle(PanelGlownyController.java:28)
	at controllers.PanelGlownyController$1.handle(PanelGlownyController.java:1)
	at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
	at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
	at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
	at javafx.event.Event.fireEvent(Unknown Source)
	at javafx.scene.control.MenuItem.fire(Unknown Source)
	at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer.doSelect(Unknown Source)
	at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer.lambda$createChildren$324(Unknown Source)
	at com.sun.javafx.scene.control.skin.ContextMenuContent$MenuItemContainer$$Lambda$272/1586419481.handle(Unknown Source)
	at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(Unknown Source)
	at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
	at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
	at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
	at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
	at javafx.event.Event.fireEvent(Unknown Source)
	at javafx.scene.Scene$MouseHandler.process(Unknown Source)
	at javafx.scene.Scene$MouseHandler.access$1500(Unknown Source)
	at javafx.scene.Scene.impl_processMouseEvent(Unknown Source)
	at javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
	at com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
	at com.sun.glass.ui.View.notifyMouse(Unknown Source)
	at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at com.sun.glass.ui.win.WinApplication.lambda$null$141(Unknown Source)
	at com.sun.glass.ui.win.WinApplication$$Lambda$37/1109371569.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

Kod klasy PanelGlownyController:

package controllers;

import java.net.URL;
import java.util.ResourceBundle;

import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;
import taskmanager.ZmianaSceny;

public class PanelGlownyController implements Initializable {

	@FXML
	private MenuBar menuBar;
	@FXML
	private MenuItem btnAddUser;
	@FXML
	private AnchorPane anchorPane;

	public void konfigurujMenu() {
		btnAddUser.setOnAction(new EventHandler<ActionEvent>() {
			public void handle(ActionEvent event) {
				Stage ownerStage = (Stage) menuBar.getScene().getWindow();
				ZmianaSceny zs = new ZmianaSceny();
				zs.changeViewModalityWindow("/FXMLAddUser.fxml", "Add user",
						event, true, ownerStage);
			}
		});
	}

	@Override
	public void initialize(URL arg0, ResourceBundle arg1) {
		// TODO Auto-generated method stub
		konfigurujMenu();

	}
}
 

i kod klasy ZmianaSceny:

package taskmanager;

import javafx.event.ActionEvent;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Modality;
import javafx.stage.Stage;
import javafx.scene.Node;

public class ZmianaSceny {
	public static Object object;

	public ZmianaSceny() {
	}

	public Stage changeView(String pathToView, String title) {
		try {

			FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource(
					pathToView));
			Parent root1 = (Parent) fxmlLoader.load();
			Stage stage = new Stage();
			stage.setScene(new Scene(root1));
			stage.setTitle(title);
			stage.show();
			return stage;
		} catch (Exception ex) {
			System.out.println(ex.toString());
			return null;
		}
	}

	public Stage changeViewModalityWindow(String pathToView, String title,
			ActionEvent event, boolean menuBar, Stage... args) {
		try {

			FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource(
					pathToView));
			Parent root1 = (Parent) fxmlLoader.load();
			Stage stage = new Stage();
			stage.setScene(new Scene(root1));
			stage.setTitle(title);
			stage.initModality(Modality.WINDOW_MODAL);
			if (!menuBar) {
				stage.initOwner(((Node) event.getSource()).getScene()
						.getWindow());
			} else {
				stage.initOwner(args[0].getScene().getWindow());
			}

			stage.showAndWait();
			return stage;
		} catch (Exception ex) {
			System.out.println(ex.toString());
			return null;
		}
	}
}

Wydaje mi się że coś jest nie tak w ifelse, a dokładniej w tym fragmenciku,

if (!menuBar) {
				stage.initOwner(((Node) event.getSource()).getScene()
						.getWindow());
			} else {
				stage.initOwner(args[0].getScene().getWindow());
			}

no ale mogę się mylić, ślęczę nad tym błędem od paru godzin i nie potrafię wydumać co jest nie tak.

Dzięki za podpowiedzi

Dodam że z panelu logowanie do panelu głównego przechodzi dobrze, a z głównego -> adduser już nie

Poradziłem sobie już. Dzięki