flutter auto route build runner error Route must have either a page or a redirect destination

when i add a new route to router.dart and run the build runner i get the Route must have either a page or a redirect destination Error

below is my code in router.drat :

 
@MaterialAutoRouter(
  replaceInRouteName: 'Page,Route',
  routes: <AutoRoute>[
    AutoRoute(
      path: '/',
      page: SplashPage,
    ),
    AutoRoute(
      path: 'signInPage',
      name: 'SignInRouter',
      page: SignInPage,
    ),
    AutoRoute(
      path: 'noteOverviewPage',
      name: 'NoteOverviewRouter',
      page: NoteOverviewPage,
    ),
    AutoRoute(
      path: 'todoFormPage',
      name: 'todoFormRouter',
      page: TodoFormPage,
    ),
  ],
)
class $AppRouter {}