Request failed with status code 500

[fibo]

I am getting "Internal Server Error" when trying to create an order.

To reproduce it you can use this script

import { ApiClient } from "@utrustdev/utrust-ts-library";

async function test() {
  console.log(process.env.UTRUST_API_KEY);
  const { createOrder } = ApiClient(process.env.UTRUST_API_KEY, "sandbox");

  const order = {
    reference: "1234",
    amount: { total: "60.00", currency: "EUR" },
    return_urls: {
      callback_url: "https://www.example.com/callback",
      return_url: "https://www.example.com/thank-you",
    },
    line_items: [
      {
        sku: "basic",
        name: "subscription",
        price: "60.00",
        currency: "EUR",
        quantity: 1,
      },
    ],
  };
  const customer = {
    email: "email@example.com",
    country: "IT",
  };

  try {
    const { data } = await createOrder(order, customer);
    console.log(data);
  } catch (error) {
    console.log(error);
  }
}

test();

Any hint?