fetch('https://data.sonla.gov.vn/api/json-dataset/491?search_column=&key_word=', {
  method: 'get',
  headers: {
    "Content-Type": "application/json",
    "Authorization": "Basic " + btoa("{your_account}:{your_password}"),
  },
}).then(response => response.json())
.then(result => console.log(result))