const options = {method: 'GET'};

fetch('https://api.dolfinai.co/purchase-orders/{id}/matched-bills', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

[
  {
    "billId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "matchGroupId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "matchGroupStatus": "<string>",
    "state": "<string>",
    "totalAmount": 123,
    "invoiceNumber": "<string>",
    "supplierName": "<string>"
  }
]