you probably have out of date packages - get is on version get: ^3.4.1, but your errors are related to a cached older version - can you try updating get in your pubspec, and then running "flutter pub cache repair"?

from stacked-example.

Yes, that's definitely the problem. You need to do a flutter pub upgrade and then try again, if that doesn't work run the repair command above.

from stacked-example.

having problem on: "onGenerateRoute: Router().onGenerateRoute"

class MyApp extends StatelessWidget {
@OverRide
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
initialRoute: Routes.startupView,
onGenerateRoute: Router().onGenerateRoute,
navigatorKey: locator().navigatorKey,
);
}
}

yaml:
dependencies:
flutter:
sdk: flutter

The following adds the Cupertino Icons font to your application.

Use with the CupertinoIcons class for iOS style icons.

cupertino_icons: ^1.0.0
stacked: ^1.7.6
auto_route:
stacked_services:
injectable:
get_it:

dev_dependencies:
flutter_test:
sdk: flutter

auto_route_generator:
injectable_generator:
build_runner:

from stacked-example.