Java ekran görüntüleme aşamasında hata

package renderEngine;

import org.lwjgl.LWJGLException;
import org.lwjgl.opengl.ContextAttribs;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.PixelFormat;

public class DisplayManager {
   
       private static final int GENISLIK = 1280;
       private static final int YUKSEKLIK = 720;
       private static final int FPS = 120;
     
       public static void goruntuOlustur() {
       
         ContextAttribs ozNitelik = new ContextAttribs(3,2);
          ozNitelik.withForwardCompatible(true);
          ozNitelik.withProfileCore(true);
       
         try {
                Display.create(new PixelFormat() , ozNitelik);
                Display.setDisplayMode(new DisplayMode(GENISLIK, YUKSEKLIK));;
            } catch (LWJGLException e) {
                e.printStackTrace();
            }
         
         GL11.glViewport(0, 0, GENISLIK, YUKSEKLIK);
       
       }
     
       public static void goruntuGuncelle() {
           Display.sync(FPS);
           Display.update();
         
       }
     
       public static void goruntuKapat() {
           Display.destroy();
       }
}

import org.lwjgl.opengl.Display;
import renderEngine.DisplayManager;

public class MainGameLoop {
 
    public static void main(String[] args) {
       DisplayManager.goruntuOlustur();
     
       while(!Display.isCloseRequested()) {
           DisplayManager.goruntuGuncelle();
       }
     
       DisplayManager.goruntuKapat();
     
    }
   
}