Angularjs loading more than once. asp .net mvc project

I'm using angular-routing in my asp .net mvc project here getting warning like follows while passing parameters from mvc controller and displaying it on view where i want to pass user id from mvc. Can any one help me solve it and how to make it asynchronous?

"Synchronous XMLHttpRequest on the main thread is deprecated because 
of its detrimental effects to the end user's experience. For more help, 
check http://xhr.spec.whatwg.org/.
VM168:289WARNING: Tried to load angular more than once."

demoController.cs (demo controller page)

public ActionResult WithParams(int? type)
    {
        ViewBag.Type = type;
        return View();
    }

demo.cshtml (view)

    @{ 
      ViewBag.Title = "WithParams"; 
       }

<h2>WithParams</h2>

@if(ViewBag.Type==1)
{
    <p>You passed 1</p>
}
else
{
    <p>You Passed 2</p>
}

myapp.js (angular)

    angular.module('app',['ngRoute']).config(['$routeProvider',  function($routeProvider) {
    $routeProvider.
      when('/demo', {
        templateUrl: 'demo/demo',
        controller: 'demoCtrl'
      }). otherwise({
        redirectTo: '/'
      });
  }]).controller('dashCtrl' , function($scope){console.log("demo page")
}