Problema ao chamar função no fxml

Boa noite senhores, encontro-me com um problema ao chamar a função no FXML criada para chamar outra view ao clicar no botão. Abaixo segue os códigos.

FXML Início (é o primeiro a ser chamado ao executar o programa)

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

<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>

<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="classes.FXMLInicioController">
   <children>
      <Button layoutX="211.0" layoutY="302.0" mnemonicParsing="false" onAction="#chamadaDeView" prefHeight="25.0" prefWidth="179.0" text="Entrar" />
   </children>
</AnchorPane>

Na linha do botão o NETBEANS detecta um erro ao chamar a função.

Controller do Início

package classes;

import java.awt.event.ActionEvent;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.stage.Stage;
import views.MenuPrincipalController;

/**
 * FXML Controller class
 *
 * @author Hiago
 */
public class FXMLInicioController implements Initializable {

    @FXML
    public void chamadaDeView(ActionEvent e) throws Exception{
        new MenuPrincipalController().start(new Stage());
    }
    /**
     * Initializes the controller class.
     * @param url
     * @param rb
     */
    @Override
    public void initialize(URL url, ResourceBundle rb) {
        // TODO
    }    
    
}

Classe para start:

package classes;

import javafx.application.Application;
import static javafx.application.Application.launch;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;


public class Inicio extends Application {
    
    @Override
    public void start(Stage stage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("FXMLInicio.fxml"));
        Scene scene = new Scene(root);
        stage.setScene(scene);
        stage.show();
    }

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

FXML que deve ser chamado:

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

<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>

<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml/1" fx:controller="views.MenuPrincipalController">
    
</AnchorPane>

Controller do mesmo:

package views;

import java.net.URL;
import java.util.ResourceBundle;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class MenuPrincipalController implements Initializable {

    public void start(Stage stage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("FXMLMenuPrincipal.fxml"));
        Scene scene = new Scene(root);
        stage.setScene(scene);
        stage.setTitle("Sistema COPEX");
        stage.setResizable(false);
        stage.show();
    }

    @Override
    public void initialize(URL location, ResourceBundle resources) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
    
}

Galera o link do GitHub é: https://github.com/hiagomf/COPEX

Esse é o erro que aparece:

 Executing C:\Users\Hiago\Documents\NetBeansProjects\AdministradorCOPEX\dist\run1093451500\AdministradorCOPEX.jar using platform C:\Program Files\Java\jdk1.8.0_161\jre/bin/java
    Exception in Application start method
    java.lang.reflect.InvocationTargetException
    	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    	at java.lang.reflect.Method.invoke(Method.java:498)
    	at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
    	at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
    	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    	at java.lang.reflect.Method.invoke(Method.java:498)
    	at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
    Caused by: java.lang.RuntimeException: Exception in Application start method
    	at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
    	at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$154(LauncherImpl.java:182)
    	at java.lang.Thread.run(Thread.java:748)
    Caused by: javafx.fxml.LoadException: Error resolving onAction='#chamadaDeView', either the event handler is not in the Namespace or there is an error in the script.
    file:/C:/Users/Hiago/Documents/NetBeansProjects/AdministradorCOPEX/dist/run1093451500/AdministradorCOPEX.jar!/classes/FXMLInicio.fxml:11

    	at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2597)
    	at javafx.fxml.FXMLLoader.access$100(FXMLLoader.java:103)
    	at javafx.fxml.FXMLLoader$Element.processEventHandlerAttributes(FXMLLoader.java:610)
    	at javafx.fxml.FXMLLoader$ValueElement.processEndElement(FXMLLoader.java:770)
    	at javafx.fxml.FXMLLoader.processEndElement(FXMLLoader.java:2823)
    	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2532)
    	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
    	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
    	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
    	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
    	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
    	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
    	at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
    	at classes.Inicio.start(Inicio.java:15)
    	at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$161(LauncherImpl.java:863)
    	at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$174(PlatformImpl.java:326)
    	at com.sun.javafx.application.PlatformImpl.lambda$null$172(PlatformImpl.java:295)
    	at java.security.AccessController.doPrivileged(Native Method)
    	at com.sun.javafx.application.PlatformImpl.lambda$runLater$173(PlatformImpl.java:294)
    	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
    	at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    	at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
    	... 1 more
    Exception running application classes.Inicio
    Java Result: 1