Краш игры при промахе

Java:
        @Override
        public ItemStack onItemRightClick(ItemStack itemStack, World world, EntityPlayer player) {
            MovingObjectPosition mop = Bullet.getMouseOver(player, 1F, 50F, true);
            if(!world.isRemote) {
                if (mop.entityHit instanceof EntityLivingBase) {
                    mop.entityHit.attackEntityFrom(new DamageSource("bullet"), 5);
                    mop.entityHit.hurtResistantTime = 0;
                    System.out.println("Игрок произвёл выстрел!");
                }
            }
                return itemStack;
        }
 
Сверху