Answer by Jaanus Varus for jQuery File Upload in AngularJS

I'm taking a shot here. What causes the submit() not to function is the fact that the third party module which declares the file-upload directive is not available for your app. submit() should be part of the scope for the controller used by the file-upload directive.

Try changing app.js:

var app = angular.module('dxs-vkgroupApp', ['ngRoute', 'gettext', 'blueimp.fileupload'])