Firebase Messaging: getToken() error on web about flutterfire HOT 9 OPEN

import 'package:firebase_core/firebase_core.dart';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter/material.dart';
import 'package:flutter_web_frame/flutter_web_frame.dart';
import 'package:projekty_dev/firebase_options.dart';

void main() async {
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return FlutterWebFrame(
      builder: (context) {
        return MaterialApp(
          title: 'Flutter Demo',
          theme: ThemeData(
            // This is the theme of your application.
            //
            // TRY THIS: Try running your application with "flutter run". You'll see
            // the application has a blue toolbar. Then, without quitting the app,
            // try changing the seedColor in the colorScheme below to Colors.green
            // and then invoke "hot reload" (save your changes or press the "hot
            // reload" button in a Flutter-supported IDE, or press "r" if you used
            // the command line to start the app).
            //
            // Notice that the counter didn't reset back to zero; the application
            // state is not lost during the reload. To reset the state, use hot
            // restart instead.
            //
            // This works for code too, not just values: Most code changes can be
            // tested with just a hot reload.
            colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
            useMaterial3: true,
          ),
          home: const MyHomePage(title: 'Flutter Demo Home Page'),
        );
      },
      maximumSize: const Size(800, 800),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.
      _counter++;
    });
  }

  Future messagingPermissions() async {
    FirebaseMessaging messaging = FirebaseMessaging.instance;
    NotificationSettings settings = await messaging.requestPermission(
      alert: true,
      announcement: false,
      badge: true,
      carPlay: false,
      criticalAlert: false,
      provisional: false,
      sound: true,
    );
    if (settings.authorizationStatus == AuthorizationStatus.authorized) {
      debugPrint('User granted permission');
      FirebaseMessaging.instance.getToken(
        vapidKey:
            'BKE0htV7ksYElGdkn9Xi-eCchkhnsWJceIOeuQkI2qK7M7fq4HivEZ7opk-2-4VqVHC0SBY_GDedAAGfjiWilqs');
    } else {
      debugPrint('User declined or has not yet granted permission');
    }
    
  }

  @override
  Widget build(BuildContext context) {
    messagingPermissions();
    final double width = MediaQuery.of(context).size.width;
    final double height = MediaQuery.of(context).size.height;
    debugPrint('Screen is of $height height and $width width');
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.

    return Scaffold(
      appBar: AppBar(
        // TRY THIS: Try changing the color here to a specific color (to
        // Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
        // change color while the other colors stay the same.
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Center(
        // Center is a layout widget. It takes a single child and positions it
        // in the middle of the parent.
        child: Column(
          // Column is also a layout widget. It takes a list of children and
          // arranges them vertically. By default, it sizes itself to fit its
          // children horizontally, and tries to be as tall as its parent.
          //
          // Column has various properties to control how it sizes itself and
          // how it positions its children. Here we use mainAxisAlignment to
          // center the children vertically; the main axis here is the vertical
          // axis because Columns are vertical (the cross axis would be
          // horizontal).
          //
          // TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
          // action in the IDE, or press "p" in the console), to see the
          // wireframe for each widget.
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headlineMedium,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}

Future<String> getToken({String? vapidKey}) async {
    try {
      final token = ((await messaging_interop
              .getToken(
                  jsObject,
                  vapidKey == null
                      ? null
                      : messaging_interop.GetTokenOptions(
                          vapidKey: vapidKey.toJS))
              .toDart)! as JSString) // here the error is highlited
          .toDart;
      return token;
    } catch (err) {
      // A race condition can happen in which the service worker get registered
      // only when getToken is called. In this case, the first call to getToken
      // might fail.
      if (err.toString().toLowerCase().contains('no active service worker') &&
          firstGetTokenCall) {
        firstGetTokenCall = false;
        return getToken(vapidKey: vapidKey);
      }
      rethrow;
    }
  }