Firebase n'a pas été correctement initialisé.
void main() {
initializeDateFormatting().then((_) => runApp(MyApp()));
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return FutureBuilder(
// Initialize FlutterFire
future: Firebase.initializeApp(),
builder: (context, snapshot) {
if (snapshot.connectionState == ConnectionState.done) {}
Vitalik-Hakim