Trying to get property 'quantity' of non-object

i have a problem, why can't you find the property?

dd($item)

Controller:

foreach($producto as $item){

            $order_item = ItemsPedidos::create([
                'cantidad'=> $item->quantity,
                'precio' => $item->price,
                'producto_id'=> $item->id,
                'pedido_id' => $nuevoIngreso->id
            ]);
    }

Error: Trying to get property 'quantity' of non-object

via Chebli Mohamed