Wo und wie rufst Du den Konstruktor von View auf? Hast Du dort ein Model-Objekt erzeugt/zur Verfügung?
		
		
	 
[CODE lang="java" highlight="15-17, 35,86-87"]import javax.swing.JFrame;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JPanel;
import java.awt.GridLayout;
import java.util.Random;
import javax.swing.ImageIcon;
/**
 * Die View ist das Fenster des Programms. Hier werden sowohl das optische Spielfeld und Buttons erzeugt, als auch Befehle entgegengenommen und weitergeleitet.
 *
 * @author (Ben Bertram)
 * @version (17.06.2021)
 */
public class View extends JFrame implements ActionListener{
    Control ctrl;
    Model mdl;
    JButton hoch = new JButton("hoch");
    JButton runter = new JButton("runter");
    JButton rechts = new JButton("rechts");
    JButton links = new JButton("links");
    JButton würfeln = new JButton("würfeln");
    public int würfelwert = 0;
    JPanel Spielfeld= new JPanel();
    public JButton[]btns= new JButton[100];
    public String[]cmds ={"btn0","btn1","btn2","btn3","btn4","btn5","btn6","btn7","btn8","btn9","btn10","btn11","btn12","btn13","btn14","btn15","btn15","btn17","btn18","btn19","btn20","btn21","btn22","btn23","btn24","btn25","btn26","btn27","btn28","btn29","btn30","btn31","btn32","btn33","btn34","btn35","btn36","btn37","btn38","btn39","btn40","btn41","btn42","btn43","btn44","btn45","btn46","btn47","btn48","btn49","btn50","btn51","btn52","btn53","btn54","btn55","btn56","btn57","btn58","btn59","btn60","btn61","btn62","btn63","btn64","btn65","btn66","btn67","btn68","btn69","btn70","btn71","btn72","btn73","btn74","btn75","btn676","btn77","btn78","btn79","btn80","btn81","btn82","btn83","btn84","btn85","btn86","btn87","btn88","btn89","btn90","btn91","btn92","btn93","btn94","btn95","btn96","btn97","btn98","btn99"};
    public ImageIcon image1;
    public ImageIcon image2;
    /**
     * Diese Methode erzeugt eine neue View und mit ihr ein 10x10 Spielfeld mit Knöpfen darauf, 4 Richtungsknöpfe und einen Würfeln-Knopf.
     *
     * @param  keiner
     * @return nichts
     */
    public View(Control con, Model model){
        super();
        setSize(2000,1200);
        setTitle("Räuber und Gendarme");
        setVisible(true);
        Spielfeld.setLayout(new GridLayout(10,10));
        Spielfeld.setBounds(0,0,1000,1000);
        add(Spielfeld);
        hoch.setActionCommand("u");
        hoch.addActionListener(this);
        hoch.setBounds(1400,0,300,300);
        add(hoch);
        runter.setActionCommand("d");
        runter.addActionListener(this);
        runter.setBounds(1400,300,300,300);
        add(runter);
        rechts.setActionCommand("r");
        rechts.addActionListener(this);
        rechts.setBounds(1700,300,300,300);
        add(rechts);
        links.setActionCommand("l");
        links.addActionListener(this);
        links.setBounds(1000,300,300,300);
        add(links);
        würfeln.setActionCommand("dice");
        würfeln.addActionListener(this);
        würfeln.setBounds(1700,700,300,300);
        add(würfeln);
        for(int i=0;i<100;i++){
            btns
=new JButton();
            Spielfeld.add(btns);
            btns.setActionCommand(cmds);
            btns.addActionListener(this);
            btns.setEnabled(true);
        }
        image1=new ImageIcon("Gendarme.jpg");
        image1.setImage(image1.getImage().getScaledInstance(100,100,100));
        btns[0].setIcon(image1);
        image2=new ImageIcon("Raeuber.jpg");
        image2.setImage(image2.getImage().getScaledInstance(100,100,100));
        btns[9].setIcon(image2);
        this.ctrl= con;
        this.mdl= model;
    }[/CODE]