'router-outlet' is not a known element
import { NgModule } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { FormsModule } from '@angular/forms'; import { RouterModule, Routes } from '@angular/router'; import { AppComponent } from './app.component'; import {DashboardComponent} from "./dashboard/dashboard.component" const appRoutes: Routes = [ { path: '', redirectTo: '/dashboard', pathMatch: 'full', component: DashboardComponent }, { path: 'dashboard', component: DashboardComponent } ]; @NgModule({ imports: [ RouterModule.forRoot(appRoutes), BrowserModule, FormsModule ], exports: [RouterModule], declarations: [ AppComponent, DashboardComponent ], bootstrap: [AppComponent] }) export class AppModule { }