mmorpg2d/Assets/Script/Inventory/InventoryDropper.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

public class InventoryDropper : MonoBehaviour, IDropHandler
{
    public void OnDrop(PointerEventData eventData)
    {
        ItemInventory inventoryItemm = eventData.pointerDrag.GetComponent<ItemInventory>();
        inventoryItemm.Drop();
    }
}