Uncaught TypeError: Dropzone.initClass is not a function

[NotsOverflow]

• I get the following error Uncaught TypeError: Dropzone.initClass is not a function while using dropzonejs in a rails project.

• It's a fresh rails installation deployed on heroku like so

• I added gem 'dropzonejs-rails' , //= require dropzone and *= require dropzone/dropzone as required by dropzonejs

• The controller, the form and js where created as it's required

  <%= form_tag '/media_contents', method: :post, class: "dropzone", id: "media-dropzone" do %>
  <input name="authenticity_token" type="hidden" value="<%= form_authenticity_token %>" />
  <div class="fallback">
  <%= file_field_tag "media", multiple: true%>
  </div>
  <% end %>

  $(function() {
  var mediaDropzone;
  mediaDropzone = new Dropzone("#media-dropzone");
  return mediaDropzone.on("success", function(file, responseText) {
    var imageUrl;
    imageUrl = responseText.file_name.url;
  });
  });

Edit: it's converted to

return _inherits(z, Emitter), _createClass(z, null, [{
            NaN: "initClass",
            NaN: function I() {

I dont think that the NaN does any good :/

i need to try using a linux machine cauz it's wierd

[NotsOverflow]

it's the asset pipeline