diff --git a/src/network/mcpe/InventoryManager.php b/src/network/mcpe/InventoryManager.php
index 2c2ecc8c8..6cd8e5019 100644
--- a/src/network/mcpe/InventoryManager.php
+++ b/src/network/mcpe/InventoryManager.php
@@ -37,6 +37,7 @@ use pocketmine\inventory\Inventory;
 use pocketmine\inventory\transaction\action\SlotChangeAction;
 use pocketmine\inventory\transaction\InventoryTransaction;
 use pocketmine\item\Item;
+use pocketmine\network\mcpe\convert\TypeConversionException;
 use pocketmine\network\mcpe\convert\TypeConverter;
 use pocketmine\network\mcpe\protocol\ClientboundPacket;
 use pocketmine\network\mcpe\protocol\ContainerClosePacket;
@@ -52,6 +53,7 @@ use pocketmine\network\mcpe\protocol\types\inventory\CreativeContentEntry;
 use pocketmine\network\mcpe\protocol\types\inventory\ItemStackWrapper;
 use pocketmine\network\mcpe\protocol\types\inventory\NetworkInventoryAction;
 use pocketmine\network\mcpe\protocol\types\inventory\WindowTypes;
+use pocketmine\network\PacketHandlingException;
 use pocketmine\player\Player;
 use pocketmine\utils\AssumptionFailedError;
 use pocketmine\utils\ObjectSet;
@@ -148,12 +150,18 @@ class InventoryManager{
 
 	/**
 	 * @param NetworkInventoryAction[] $networkInventoryActions
+	 * @throws PacketHandlingException
 	 */
 	public function addPredictedSlotChanges(array $networkInventoryActions) : void{
 		foreach($networkInventoryActions as $action){
 			if($action->sourceType === NetworkInventoryAction::SOURCE_CONTAINER && isset($this->windowMap[$action->windowId])){
 				//this won't cover stuff like crafting grid due to too much magic
-				$this->initiatedSlotChanges[$action->windowId][$action->inventorySlot] = TypeConverter::getInstance()->netItemStackToCore($action->newItem->getItemStack());
+				try{
+					$item = TypeConverter::getInstance()->netItemStackToCore($action->newItem->getItemStack());
+				}catch(TypeConversionException $e){
+					throw new PacketHandlingException($e->getMessage(), 0, $e);
+				}
+				$this->initiatedSlotChanges[$action->windowId][$action->inventorySlot] = $item;
 			}
 		}
 	}