Retrive All fulfillment Orders of a specified order

Retired Boards Appdev Fulfillment Api
1

I want to get all fulfillmentOrders of an order using rest api as below in NestJS application:

async getFulfillmentOrders(orderId: string) {
    const res = await this.shopify.rest.FulfillmentOrder.all({
      session: this.getSession(),
      order_id: orderId,
    });

    return res?.fulfillment_orders;
  }

the response contains an object that has a field called data with an empty array value and has headers field.
when I paste url of the order in route with /fulfillment_orders.json it returns the expected fulfillment orders. but with calling rest api returns the mentioned data.