Array not returning from a router

I’m having some trouble getting some values from my database via express. On my server, I have this router call:

router.get('/list/:id', TokenController.isAValidToken, async (req, res) => {
    const { cardID } = req.query;

    try {
        if (cardID != null) {
            ...
        } else {
            const cards = await CardsController.getCardsForList(req.params.id);
            const orderItems = await OrderItemController.getOrderItemsForCardsInList(cards, req.params.id);
            console.log(orderItems); // <- This prints an array with the info I need
            res.json(orderItems);
        }
    } catch (error) {
        ...
    }
});

My getOrderItemsForCardsInList function has this:

static async getOrderItemForCardInList(cardID, listID) {
   return OrderItem.find({ card: cardID, list: listID }).exec();
}

static async getOrderItemsForCardsInList(cards, listID) {
   return Promise.all(cards.map((card) => OrderItemController.getOrderItemForCardInList(card, listID)));
}

On my client, I call the router function like this:

async function getOrderItemsForCardsInList(listID) {
    const token = await getToken();
    const response = await fetch(`${basePath}/order/list/${listID}`, {
        method: 'GET',
        headers: getTokenAuthHeaders(token)
    });

    return response.json();
}

export default function useOrderItemsForCardsInList(cards) {
    const { listID } = useParams();

    return useQuery(['order', ...cards], () => {
        if (listID != null) {
            return getOrderItemsForCardsInList(listID);
        } else {
            throw Error('No list id defined');
        }
    });
}

And I call that custom hook over here:

const { orderdata } = useOrderItemsForCardsInList(cards.map((card) => card !== null && card._id));
console.log('Data', orderdata);

The problem is that orderdata is printing undefined, meaning that the values are not getting returned as they should, my theory is that probably I’m messing something up in my useOrderItemsForCardsInList custom hook.