角度4的延迟加载不起作用

我试图在我的angular4项目中创建一个延迟加载,按照文档中的所有步骤操作,什么都不做。

下面是我的代码:

学生模块:

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';

import { StudentComponent } from './student.component';
import { StudentNotFoundComponent } from './student-not-found/student-not-found.component';
import { StudentFormComponent } from './student-form/student-form.component';
import { StudentDetailComponent } from './student-detail/student-detail.component';
import { StudentService } from './student.service';

@NgModule({
   imports: [
      CommonModule
   ],
   declarations: [
      StudentComponent,
      StudentFormComponent,
      StudentDetailComponent,
      StudentNotFoundComponent
   ],
   providers: [
      StudentService
   ]
})
export class StudentModule { }

学生路线模块:

import { ModuleWithProviders } from '@angular/core';
import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';

import { StudentNotFoundComponent } from './student-not-found/student-not-found.component';
import { StudentFormComponent } from 'app/student/student-form/student-form.component';
import { StudentDetailComponent } from './student-detail/student-detail.component';
import { StudentComponent } from './student.component';

const student : Routes = [
      {path : '', component : StudentComponent, children: [
      {path : 'new', component : StudentFormComponent},
      {path : ':id', component : StudentDetailComponent},
      {path : ':id/edit', component : StudentFormComponent},
      {path : 'student-not-found', component : StudentNotFoundComponent}
   ]}
];

@NgModule({
    imports : [RouterModule.forChild(student)],
    exports : [RouterModule]
})
export class SchoolClassRoutingModule { }

批准模块:

import { ModuleWithProviders } from '@angular/core';
import { RouterModule, Routes, LoadChildren } from '@angular/router';
import { NgModule } from '@angular/core';


import { HomeComponent } from './home/home.component';
import { PageNotFoundComponent } from './page-not-found/page-not-found.component';
import { AuthGuard } from './guard/auth.guard';

const APP_ROUTE: Routes = [
    {
        path: 'student',
        component: StudentComponent,
        loadChildren: 'app/student/student.module#StudentModule',
        canLoad: [AuthGuard]
    },
    { path: 'login', component: LoginComponent},
    { path: 'home', component: HomeComponent},
    { path: '', redirectTo: 'home', pathMatch: 'full' },
    { path: '**', component: PageNotFoundComponent}
];

@NgModule({
    imports : [RouterModule.forRoot(APP_ROUTE)],
    exports : [RouterModule]
})
export class AppRoutingModule { }

和AppModule:

import { BrowserModule }          from '@angular/platform-browser';  
import { NgModule }               from '@angular/core';
import { FormsModule }            from '@angular/forms';
import { HttpModule }             from '@angular/http';
import { ModuleWithProviders }    from '@angular/core';

import { MaterializeModule }      from 'angular2-materialize';

import { AppComponent }           from './app.component';
import { LoggedConfig }           from './config/logged.config';
import { TokenConfig }            from './config/token.config'
import { AuthGuard }              from './guard/auth.guard';
import { AuthenticationService }  from './authentication/authentication.service';
import { LoginComponent }         from './login/login.component';
import { AdministratorComponent } from './administrator/administrator.component';
import { HomeComponent }          from './home/home.component';
import { NavbarComponent }        from './navbar/navbar.component';
import { PageNotFoundComponent }  from './page-not-found/page-not-found.component';
import { AppRoutingModule }       from 'app/app.routing.module';

@NgModule({
    declarations: [
        AppComponent,
        LoginComponent,
        AdministratorComponent,
        HomeComponent,
        NavbarComponent,
        PageNotFoundComponent
    ],
    imports: [
        BrowserModule,
        FormsModule,
        HttpModule,
        MaterializeModule,
        AppRoutingModule
    ],
    providers: [
        AuthGuard,
        AuthenticationService,
        LoggedConfig,
        TokenConfig
    ],
    bootstrap: [AppComponent]
})
export class AppModule { }

控制台错误:

Console error

我已经阅读了文档,我已经在github中看到了几个示例,所有这些都是我正在做的事情。帮助