Answers for "angular error NG8001: 'router-outlet' is not a known element:"

error ng8001 'router-outlet' is not a known element

import { RouterModule } from '@angular/router';

router-outlet' is not a known element:

@NgModule({
  imports: [
      BrowserModule,
      RouterModule.forRoot(appRoutes),
      FormsModule               
  ],
  declarations: [
      AppComponent,  
      DashboardComponent      
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }