Solved Spawning Zombie, Client crash...

I need some help, when i spawn the zombie the client crashes:

Code:java

//Calling Method
Mobs.Bandit(player.getWorld().getSpawnLocation());
 
//Method
    public static void Bandit(Location l) {
        MobAttributes.createRandomZombie(l, "Bandit", 1, 20F, 10, new ItemStack[]{new ItemStack(Material.ROTTEN_FLESH)}, new int[]{100}, new int[]{100}, new ItemStack[]{new ItemStack(Material.WOOD_SWORD), new ItemStack(Material.LEATHER_BOOTS), new ItemStack(Material.LEATHER_LEGGINGS), new ItemStack(Material.LEATHER_CHESTPLATE), new ItemStack(Material.LEATHER_HELMET)});
    }
 
//Spawning Method
 
    public static void createRandomZombie(Location location, String name, int tier, float maxHealth, int healthRange, org.bukkit.inventory.ItemStack[] drops, int[] dropC, int[] dropA, org.bukkit.inventory.ItemStack[] equipment) {
   equipment[0] = swords.randomSword(tier);
                equipment[1] = helm.randomHelmet(tier);
                equipment[2] = cp.randomChest(tier);
                equipment[3] = legg.randomLeggings(tier);
                equipment[4] = boots.randomBoots(tier);
 
            CustomZombie z = new CustomZombie(location.getWorld(), name, maxHealth, drops, dropC, dropA, equipment);
            z.setLocation(location.getBlockX(), location.getBlockY(), location.getBlockZ(), 0, 0);
            ((CraftWorld)location.getWorld()).getHandle().addEntity(z, SpawnReason.CUSTOM);
    }
 
//NMS Method
 
    public CustomZombie(org.bukkit.World world, String name, float maxHealth, org.bukkit.inventory.ItemStack[] drops, int[] dropC, int[] dropA, org.bukkit.inventory.ItemStack[] equipment) {
        this(((CraftWorld)world).getHandle(), maxHealth);
 
        this.setCustomName(name);
 
        this.drops = drops;
        this.dropC = dropC;
        this.dropA = dropA;
 
        for(int e = 0; e < equipment.length ;e++) {
            this.setEquipment(e, CraftItemStack.asNMSCopy(equipment[e]));
        }
    }

//Crash:
Description: Exception in world tick

java.lang.NullPointerException
at bcw.a(SourceFile:571)
at dg.a(SourceFile:87)
at co.b(SourceFile:354)
at bcw.e(SourceFile:98)
at bdd.b(SourceFile:60)
at atv.k(SourceFile:1386)
at atv.S(SourceFile:663)
at atv.d(SourceFile:619)
at net.minecraft.client.main.Main.main(SourceFile:101)