Unexpected value 'undefined' declared by the module 'AppModule'

Question

What is wrong here? I\'m trying to make it work but I get that error in the header. I have included the in the app

Answer 1

In My scenario, I made mistake like below

  @NgModule({
  imports: [RouterModule.forChild(routes)],
  exports: [RouterModule]
})
export class NewTestRoutingModule {
  static component : [NewTestContainerComponent, NewTestInletComponent, NewTestStructureComponent]
}

and in Module

@NgModule({
  declarations: [LayersRoutingModule.component],

The components array in Routing should be like this.

 static component = [NewTestContainerComponent, NewTestInletComponent, NewTestStructureComponent]