Jquery 有时oc.lazyLoad在angularjs中工作不正常？

我正在从事Angularjs项目，其中要求按需加载css和js文件，为此，我在Angularjs中使用了oc.lazyLoad库，但有时加载页面会导致罚款，有时加载文件会产生错误。以下是我的代码：

    .state('datetimepickers', {
        url: "/date-time-picker",
        templateUrl: "views/date-time-picker.php",
        data: {pageTitle: 'Date-Time Pickers'},
        controller: "DateTimePickerController", 
        resolve: {
            deps: ['$ocLazyLoad', function($ocLazyLoad) {
                return $ocLazyLoad.load({
                    name: 'datetimepicker',
                    insertBefore: '#ng_load_plugins_before', // load the above css files before a LINK element with this ID. Dynamic CSS files must be loaded between core and theme css files
                    files: [
                        'assets/global/plugin/bootstrap-datepicker/css/datepicker.css',
                        'assets/global/plugin/bootstrap-datepicker/css/bootstrap-datetimepicker.min.css',
                        'assets/global/plugin/bootstrap-datepicker/css/bootstrap-timepicker.min.css',
                        'assets/global/plugin/bootstrap-datepicker/css/daterangepicker.css',
                        'assets/global/plugin/bootstrap-datepicker/css/clockface.css',

                        'assets/global/plugin/bootstrap-datepicker/js/bootstrap-datepicker.js',
                        'assets/global/plugin/bootstrap-datepicker/js/bootstrap-timepicker.js',
                        'assets/global/plugin/bootstrap-datepicker/js/clockface.js',
                        'assets/global/plugin/bootstrap-datepicker/js/bootstrap-datetimepicker.min.js',
                        'assets/global/plugin/bootstrap-datepicker/js/moment.js',
                        'assets/global/plugin/bootstrap-datepicker/js/daterangepicker.js',

                        'js/controllers/DateTimePickerController.js'
                    ] 
                });
            }]
        } 
    })

有时，它工作正常，但重新加载页面时会产生以下错误：

错误：力矩不是一个函数 日期选择器@

---

$.fn.daterangepicker/路径有问题吗？