Solved Jump and Run Plugin

Hey, im trying to code an Jump and Run Plugin. The Idea is that you go on a stone Plate to start the game. After that you will be teleported 20 block above and a block generates 3 blocks away from you. If you jump on it than the old one will be deleted and a new one will be created. I tried a bit but it doesnt work. Hope you can help.


Main:

Code:

public class Main extends JavaPlugin{
   
   

    @Override
    public void onEnable() {
        register();
    }
    @Override
    public void onDisable() {
       
    }
    public void register() {
        PluginManager pm = Bukkit.getPluginManager();
        pm.registerEvents(new InteractWIthPlateEvent(), this);
    }
}

Methode:

Code:

public class JumpAndRun {

    public static Map<UUID, JumpAndRun> jumpAndRuns = new HashMap<UUID, JumpAndRun>();
    private Player player; //soon
    private Location spawnloc;
    private Location currentloc;
    private Location nextloc;
    private Random random;
    private int blockCounter; //soon
   
    private boolean isBlock(Location location) {
        return (location.getBlock().getType() != Material.AIR);
    }
   
    public Location getCurrentLocation() {
        return this.currentloc;
    }
    public Location getNextLocation() {
        return this.nextloc;
    }
   
    public JumpAndRun(Player player) {
        this.player = player;
        this.spawnloc = player.getLocation();
    }
    public void start(Player player) {
        Location newloc;
       
        double x = this.random.nextInt(3);
        double y = this.random.nextInt(20);
        double z = this.random.nextInt(3);
       
        try {
            do {
                x = this.random.nextInt(3);
                y = this.random.nextInt(20);
                z = this.random.nextInt(3);
               
                newloc = new Location(this.spawnloc.getWorld(), this.spawnloc.getX() +x, this.spawnloc.getY() +y, this.spawnloc.getZ() +z);
            } while (isBlock(newloc));
        } catch (Exception e) {
            newloc = new Location(this.spawnloc.getWorld(), this.spawnloc.getX() +x, this.spawnloc.getY() +y, this.spawnloc.getZ() +z);
        }
       
        addBlock(newloc);
        this.currentloc = newloc;
        player.teleport(this.currentloc.add(0.0D,1D,0.0D));
        this.currentloc.subtract(0.0D, 1.0D, 0.0D);
       
    }
       
       
        private void addBlock(Location location) {
            location.subtract(0.0D, 1.0D, 0.0D).getBlock().setType(Material.STAINED_CLAY);
           
       
    }
        public void stop(Player player) {
            this.currentloc.getBlock().setType(Material.AIR);
            this.nextloc.getBlock().setType(Material.AIR);
            jumpAndRuns.remove(player.getUniqueId());
        }
   
}

Event:
public class InteractWIthPlateEvent implements Listener{

//Prefix
private static String prefix = Cache.getPrefix();


@EventHandler
public void onIteract(PlayerInteractEvent event) {
Player player = (Player) event.getPlayer();
if(event.getAction().equals(Action.PHYSICAL) && event.getClickedBlock().getType().equals(Material.STONE_PLATE)) {
if(player.getWorld().getName().equalsIgnoreCase("world")) {
player.sendMessage("Debug");
JumpAndRun jumpAndRun = new JumpAndRun(player);
jumpAndRun.start(player);
JumpAndRun.jumpAndRuns.put(player.getUniqueId(), jumpAndRun);
player.sendMessage(prefix+"§aJump and Run Gestartet!");
}
}
}
@EventHandler
public void onMove(PlayerMoveEvent event) {
Player player = event.getPlayer();;
}
}

Exeption: