Angular 在IE浏览器中，未捕获（承诺中）：错误：加载区块modulename模块失败

我在angular 7中使用了惰性加载概念。我已经创建了带有侧菜单的项目。在侧菜单中路由页面时，我得到的错误是“未捕获（承诺中）：错误：加载chunk modulename模块失败”。但是,

app-routing.module.ts

const routes: Routes = [
  { path: '', redirectTo:'login', pathMatch: 'full' },
  { path: 'parent', loadChildren: './layout/layout.module#LayoutModule'},
  { path: 'login', component: LoginComponent}
];

const routes: Routes = [
      {
      path: '',
      component: LayoutComponent,
      children: [
          { path: 'dashboard', loadChildren: '../dashboard/dashboard.module#DashBoardModule'}, 
          { path: 'test', loadChildren: '../test/test.module#TestModule'}, 
          { path: '', redirectTo: 'dashboard', pathMatch: 'full' }
      ]
    }
];

layout-routing.module.ts

const routes: Routes = [
  { path: '', redirectTo:'login', pathMatch: 'full' },
  { path: 'parent', loadChildren: './layout/layout.module#LayoutModule'},
  { path: 'login', component: LoginComponent}
];

const routes: Routes = [
      {
      path: '',
      component: LayoutComponent,
      children: [
          { path: 'dashboard', loadChildren: '../dashboard/dashboard.module#DashBoardModule'}, 
          { path: 'test', loadChildren: '../test/test.module#TestModule'}, 
          { path: '', redirectTo: 'dashboard', pathMatch: 'full' }
      ]
    }
];

layout.component.ts

 navItems: NavItem[] = [
         {
          displayName: 'TEST',
          iconName: 'speaker_notes',
          route: 'test',
          children: [
            {
              displayName: 'Bulk Download',
              iconName: 'cloud_download',
              route: 'parent/test'
            }]
          }
        ]

在这里，我在侧菜单中“测试”导航时出错

任何人的帮助都将被感激

我已经尝试创建一个用于检查延迟加载和测试代码的工具，看起来在我的IE11浏览器上一切都很好。因此，您是否可以发布足够的代码来重现中的问题（例如使用）。此外，你也可以检查一下。