options != null "FirebaseOptions cannot be null when creating the default app."
void main() async {
WidgetsFlutterBinding.ensureInitialized();
await Firebase.initializeApp(
// Replace with actual values
options: FirebaseOptions(
apiKey: "XXX",
appId: "XXX",
messagingSenderId: "XXX",
projectId: "XXX",
),
);
runApp(MyApp());
}