Could not pass Event

Everytime I drop and then pickup the Item::EMERALD I get this error in the console

Code:

[18:12:10] [Server thread/CRITICAL]: "Could not pass event 'pocketmine\event\player\PlayerDropItemEvent' to 'TeamsManager v1.0 DEV': Class Team\Teams\Item not found on Team\Teams\TeamMain
[18:12:10] [Server thread/CRITICAL]: ClassNotFoundException: "Class Team\Teams\Item not found" (EXCEPTION) in "/src/spl/BaseClassLoader" at line 144


[18:12:13] [Server thread/CRITICAL]: "Could not pass event 'pocketmine\event\inventory\InventoryPickupItemEvent' to 'TeamsManager v1.0 DEV': Call to undefined method pocketmine\event\inventory\InventoryPickupItemEvent::getPlayer() on Team\Teams\TeamMain
[18:12:13] [Server thread/CRITICAL]: Error: "Call to undefined method pocketmine\event\inventory\InventoryPickupItemEvent::getPlayer()" (EXCEPTION) in "/TeamsManager-master/src/Team/Teams/TeamMain" at line 44

Here is the code

PHP:

public function onPickup(InventoryPickupItemEvent $event){
        $player = $event->getPlayer();
        $fizz = new AnvilFallSound($player);
        $player->getLevel()->addSound($fizz);
        $amount = $this->cf["MoneyAmount"];
        $this->economyAPI->addMoney($player, $amount);
        $this->PlayerFile->set("EXP",$amount);
        $this->PlayerFile->save();
    }
   
    public function onDrop(PlayerDropItemEvent $event){
        $player = $event->getPlayer();
        if($player->getInventory()->getItemInHand()->getId() === Item::EMERALD){
            $event->setCancelled(true);
        }
    }


What did I do wrong??

You did not

PHP:

use pocketmine\item\Item;

Thanks