小编lmi*_*ael的帖子

尝试在Angular 4中使用nestet路由时出现此错误:

ERROR Error: Uncaught (in promise): TypeError: Cannot read property 'component' of null
TypeError: Cannot read property 'component' of null
    at PreActivation.webpackJsonp.../../../router/@angular/router.es5.js.PreActivation.traverseRoutes (http://localhost:4200/vendor.bundle.js:77976:71)
    at http://localhost:4200/vendor.bundle.js:77954:19
    at Array.forEach (native)
    at PreActivation.webpackJsonp.../../../router/@angular/router.es5.js.PreActivation.traverseChildRoutes (http://localhost:4200/vendor.bundle.js:77953:29)
    at PreActivation.webpackJsonp.../../../router/@angular/router.es5.js.PreActivation.traverseRoutes (http://localhost:4200/vendor.bundle.js:77985:22)

这是我的路由代码:

const appRoutes: Routes = [
    {
        path: '',
        component: HomeComponent
    },

    {
        path: 'sobre',
        component: SobreComponent
    },
    {
        path: 'c/:concurso', component: ConcursoItemComponent

        , children: [         
            {

                path: ':cargo',
                component: CargoItemComponent,


                children: [
                    {
                        path: ':disc',
                        component: DisciplinaItemComponent,
                        children: [{
                            path: ':assunto',
                            component: AssuntoItemComponent
                        }] …