As for the references and routes, we already know what to do. Let's just emphasize the routing aspect, as this is the only thing that might not throw an immediate exception if we do something wrong, thus taking more time to fix in case of an error:
[...] { path: 'question/edit/:id', component: QuestionEditComponent },{ path: 'answer/create/:id', component: AnswerEditComponent },{ path: 'answer/edit/:id', component: AnswerEditComponent },{ path: 'about', component: AboutComponent },[...]
