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tell me what's wrong with my script

using GTA;
using GTA.Native;
using GTA.Math;
using System;
using System.Windows.Forms;
using System.Collections.Generic;
using System.IO;
using System.Drawing;
using System.Media;public class MyFirstMod : Script
{
 // Where you initialize all your variables for use.
 private string modName = "My First Mod ";
 private string modCreatorName = "zooloo1235"; private Ped playerPed = Game.Player.Character;
 private Player player = Game.Player; // Where you initialize the events or do anything when the mod starts.
 public MyFirstMod()
 {
  UI.Notify(modName + " made by: " + modCreatorName + " using GTA V Script Creator 1.0");  Tick += OnTick;
  KeyDown += OnKeyDown;
  KeyUp += OnKeyUp;
 } // This is where loops/things are run every frame.
 private void OnTick(object sender, EventArgs e)
 { }
 
 // When you press a key down or hold it.
 private void OnKeyDown(object sender, KeyEventArgs e)
 {
        if (e.KeyCode == Keys.J)
  {
             Ped chop = World.CreatePed("A_C_CHOP", new Vector3(playerPed.Position.X, playerPed.Position.Y, playerPed.Position.Z);
             Game.Player.Character.CurrentPedGroup.Add(chop, false);
             UI.Notify("Spawned Chop as a Bodyguard!");
  }
        if (e.KeyCode == Keys.K)
  {
             Vehicle veh = World.CreateVehicle("ADDER", playerPed.Position);
             UI.ShowSubtitle("Spawned an ~r~Adder!", 2500);
  }
        if (e.KeyCode == Keys.Y)
  {
             Ped nearestPed = World.GetNearbyPeds(Game.Player.Character, 7f)[0];
             nearestPed.Kill();
             UI.ShowSubtitle("~r~Killing nearest ped!", 2500);
  }
 }    // When you press a key up or release it.
 private void OnKeyUp(object sender, KeyEventArgs e)
 { }
}