rangeError：angularjs中超出最大调用堆栈

Question

我一直在尝试使用ngRoute模块，但是我收到错误.. 顺便说一句，我已经下载了ngRoute模块。

var myApp = angular.module("myApp", ["ngRoute"]);

myApp.controller("mainCtrl", ['$scope', function ($scope) {

}]);

myApp.config(['$routeProvider', '$locationProvider', function ($routeProvider, $locationProvider) {

  $locationProvider.hashPrefix('');
  $routeProvider
    .when('/', {
      templateUrl: "angular.html",
      controller: "mainCtrl"
    })
    .when('/second', {

      templateUrl: "second.html",
      controller: "mainCtrl"
    })

    .when('/main', {
      templateUrl: "main.html",
      controller: "mainCtrl"
    })

}]);