what am i expecting to happen : When I run the fetch it returns a client secret which than can be used for down the rabbit hole

new.haml

  var form = document.getElementById('payment-form');
  form.addEventListener('submit', function(event) {
    event.preventDefault();
    if ($('#amount').not(':empty')){
      $("#poker_button").attr("disabled", true);
      $("#poker_button").html('We are processing your donation, please wait');
      $("#poker_button").css('background-color', '#28a745');
    };

    var response = fetch('/donations/create_payment_intent')
    .then(function(response) {
      console.log(response)
      return response.json();
    })
    .then(function(responseJson) {
      var clientSecret = responseJson.client_secret;
      console.log("foo")
    });
  });