Fixes About Image load

src/main/java/de/tu_darmstadt/tk/SmartHomeNetworkSim/view/popups/AboutPopUp.java

@@ -5,11 +5,12 @@ import javax.swing.JLabel;
 
 import java.awt.Dimension;
 import java.awt.Font;
-import java.awt.Toolkit;
 
 import javax.swing.JTextArea;
 import javax.swing.UIManager;
 
+import de.tu_darmstadt.tk.SmartHomeNetworkSim.view.util.Utility;
+
 /**
  * PopUp which shows a short description of the program and developers
  *
@@ -29,9 +30,7 @@ public class AboutPopUp extends JFrame {
 		//Created using Eclipse Window Builder
 		this.setMinimumSize(new Dimension(500, 400));
 		this.setPreferredSize(new Dimension(500, 400));
-		setIconImage(Toolkit.getDefaultToolkit().getImage(
-				AboutPopUp.class
-						.getResource("/images/smartHome_icon.png")));
+		setIconImage(Utility.loadFile("/images/smartHome_icon.png"));
 		setTitle("SmartHomeNetworkSim: About");
 		setFont(new Font("Roboto", Font.PLAIN, 42));
 		getContentPane().setLayout(null);