How to cancel routing go_router in redirection?

How to cancel routing? If user is not premium user, Try to not allow to move to target routing. For example, like below.

redirect: (BuildContext context, GoRouterState state) {
  if (AuthState.of(context).isNotPremiumUser) {
   // cancel routing
  } else {
    return null;
  }   
},

How to do "return false" with go_router?

I did some research but nothing very conclusive.

The only way i found is this.

redirect: (BuildContext context, GoRouterState state) {
  if (AuthState.of(context).isNotPremiumUser) {
   context.goNamed(state.matchedLocation)
  } else {
    return null;
  }   
},

This cancels the navigation because the BuildContext of Redirect do not have permission to navigate. It also gives us a log which can be problematic or not.

Assertion failed: inherited != null "No GoRouter found in context"

If you find this method problematic you also can navigate user to NavigationErrorScreen

redirect: (BuildContext context, GoRouterState state) {
  if (AuthState.of(context).isNotPremiumUser) {
    return '/navigation_error';
  } else {
    return null;
  }   
},

Navigation Error screen says You do not have permission or something and there must be a button for going back.

Navigating user same exact location can be tricky but i think it achievable with path_params or just calculate user state and navigate home/sign_in screen with that button.