Javafx project - empty window

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JavaFX

Hello, why when i want to start my JavaFX project window comes out?

image — ImgBB[^]

the code:

package application;

import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;

public class Controller {

	@FXML
	
	ImageView myView;
	Button myButton;
	
	Image myImage = new Image(getClass().getResourceAsStream("back.jpg"));
	
	//method that change our image
	
	public void displayImage() {
		
		myView.setImage(myImage);
		
		
	}
}

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

<?import javafx.scene.control.Button?>
<?import javafx.scene.image.Image?>
<?import javafx.scene.image.ImageView?>
<?import javafx.scene.layout.AnchorPane?>


<AnchorPane xmlns:fx="http://javafx.com/fxml/1"
	xmlns="http://javafx.com/javafx/8.0.171">
	<children>
		<AnchorPane layoutX="-6.0" prefHeight="421.0"
			prefWidth="518.0">
			<children>
				<Button fx:id="myButton" layoutX="230.0" layoutY="322.0"
					mnemonicParsing="false" onAction="#isplayImage" prefHeight="70.0"
					prefWidth="105.0" text="Button" />
				<ImageView fx:id="myView" fitHeight="228.0"
					fitWidth="290.0" layoutX="138.0" layoutY="39.0" pickOnBounds="true"
					preserveRatio="true">
					<image>
						<Image url="@../../../Desktop/front.jpg" />
					</image>
				</ImageView>
			</children>
		</AnchorPane>
	</children>
</AnchorPane>

What I have tried:

I really dont know where the mistake is?