I dont even know

Main.php

<?php


namespace HoloText;


use pocketmine\Server;
use pocketmine\command\CommandSender;
use pocketmine\item\Item;
use pocketmine\command\Command;
use pocketmine\event\Listener;
use pocketmine\network\protocol\AddPlayerPacket;
use pocketmine\Player;
use pocketmine\IPlayer;
use pocketmine\utils\TextFormat;
use pocketmine\plugin\PluginBase;
use pocketmine\utils\Config;


class Main extends PluginBase  implements Listener {
	
	
    public function onEnable() {
//            @mkdir($this->getDataFolder());
//            $this->saveDefaultConfig();
//            $this->reloadConfig();
            $this->getServer()->getPluginManager()->registerEvents($this, $this);
            $this->getLogger()->info( TextFormat::GREEN . "HoloText - Enabled!" );
    }
	
	
    public function onCommand(CommandSender $sender, Command $command, $label, array $args) {
        if($sender instanceof Player) {
            if(isset($args)) {
                if($sender->isOp()) {
                    $text = implode(" ", $args);
                    $argsF = str_replace("%n%", "\n", $text);
                    $item = Item::AIR;
                    $pos = $sender->getPosition();
                    $pk = new AddPlayerPacket ();
                    $pk->clientID = 0;
                    //$pk->username = "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n";
                    $pk->username .= $argsF . "\n";
                    $pk->eid = rand(0, 100);
                    $pk->x = $pos->x;
                    $pk->y = $pos->y - 2;
                    $pk->z = $pos->z;
                    $pk->yaw = $sender->yaw;
                    $pk->pitch = $sender->pitch;
                    $pk->item = $item;
                    $pk->meta = 0;
                    $pk->metadata = [ ];
                    $sender->dataPacket ( $pk );
                    Server::broadcastPacket ($sender->getViewers(), $pk );
                    return true;
                }
            } else {
                $sender->sendMessage("[Holo] Usage:\n/holo <text>");
                return true;
            }
        } else {
            $sender->sendMessage(TextFormat::RED . "Please use command in-game.");
        }
    }
}