AddEntityPacket is not working

hey, im not sure why i get this error... could it be because i am using an outdated reference?

Code:

[Server thread/CRITICAL]: Could not pass event 'pocketmine\event\player\PlayerJoinEvent' to 'Advanced_Welcome v0.1': Argument 1 passed to pocketmine\network\mcpe\NetworkBinaryStream::putEntityUniqueId() must be of the type integer, null given, called in phar://C:/Users/steve/Desktop/MCPE server/faction server/PocketMine-MP.phar/src/pocketmine/network/mcpe/protocol/AddEntityPacket.php on line 96 on Atom\Main

[Server thread/CRITICAL]: TypeError: "Argument 1 passed to pocketmine\network\mcpe\NetworkBinaryStream::putEntityUniqueId() must be of the type integer, null given, called in phar://C:/Users/steve/Desktop/MCPE server/faction server/PocketMine-MP.phar/src/pocketmine/network/mcpe/protocol/AddEntityPacket.php on line 96" (EXCEPTION) in "src/pocketmine/network/mcpe/NetworkBinaryStream" at line 286

and my code:

PHP:

public function onJoin(PlayerJoinEvent $event){
        $player = $event->getPlayer();
        $name = $player->getName(); 

        $this->sendLightning($player);
}

public function sendLightning(Player $player){
        $level = $player->getLevel();

        $light = new AddEntityPacket();
        $light->type = 93;
        $light->eid = Entity::$entityCount++;
        $light->metadata = array();
        $light->speedX = 0;
        $light->speedY = 0;
        $light->speedZ = 0;
        $light->yaw = $player->getYaw();
        $light->pitch = $player->getPitch();
        $light->x = $player->x;
        $light->y = $player->y;
        $light->z = $player->z;
       
       $this->getServer()->broadcastPacket($level->getPlayers(), $light);
}


 

PHP:

$x = $y = $z = 1;
$pk = new AddEntityPacket();
$pk->entityRuntimeId = Entity::$entityCount++;
$pk->type = 93;
$pk->position = new Vector3($x, $y, $z);
$pk->motion = null;
foreach(Level->getPlayers() as $players) {
  $players->dataPacket($pk);

}

 

Why?
$x = $y = $z = 1;

 

He must replace it with player x y z

 

PHP:

        $x = $player->x;
        $y = $player->y;
        $z = $player->z;