无法找到主要插座加载“t”

Question

我在角度2中遇到了一个路由问题，我花了将近一天的时间试图找出问题所在，

这是我的appmodule路由配置

 RouterModule.forRoot([
        { path: "Dashboard", component: DashBoardComponent, children: [
            {
                path: "BenchMark", component: BenchmarkPortalComponent, outlet:"portals",children: [
                    { path: "pendingAccounts", component: PendingAccounts, outlet: "contacts" },
                    { path: "acceptedAccounts", component: AcceptedAccounts, outlet : "contacts" },
                    { path: "", component: BenchmarkPortalComponent }, 
                ]
            },                
            { path: "", component: DashBoardComponent }, 
        ]},

        { path: '', redirectTo: 'DashBoard', pathMatch: 'full' }          

    ])],

我的appcomponent有一个routeroutlet，Dashboard组件有一个命名路由器插座（name =“portals”），而homecomponent有一个名为routeroutlet（name =“contacts”）

但是当我加载页面时，我看到应用程序组件已加载，然后我出现错误

core.umd.js:3491EXCEPTION: Uncaught (in promise): Error: Cannot find primary outlet to load 't'
Error: Cannot find primary outlet to load 't'
    at getOutlet (http://localhost:59784/node_modules/@angular/router/bundles/router.umd.js:4342:21)
    at ActivateRoutes.activateRoutes (http://localhost:59784/node_modules/@angular/router/bundles/router.umd.js:4183:49)
    at eval (http://localhost:59784/node_modules/@angular/router/bundles/router.umd.js:4128:60)
    at Array.forEach (native)
    at ActivateRoutes.activateChildRoutes (http://localhost:59784/node_modules/@angular/router/bundles/router.umd.js:4128:31)
    at ActivateRoutes.activateRoutes (http://localhost:59784/node_modules/@angular/router/bundles/router.umd.js:4193:28)
    at eval (http://localhost:59784/node_modules/@angular/router/bundles/router.umd.js:4128:60)
    at Array.forEach (native)
    at ActivateRoutes.activateChildRoutes (http://localhost:59784/node_modules/@angular/router/bundles/router.umd.js:4128:31)
    at ActivateRoutes.activate (http://localhost:59784/node_modules/@angular/router/bundles/router.umd.js:4102:16)

我不确定我在这里缺少什么。请帮忙。我使用角2.3.1