i want to get the FCM token

Question

I/FirebaseApp(15825): Device unlocked: initializing all Firebase APIs for app [DEFAULT]
D/eglCodecCommon(15825): setVertexArrayObject: set vao to 0 (0) 1 0
D/EGL_emulation(15825): eglMakeCurrent: 0xf24530e0: ver 2 0 (tinfo 0xebb67470)
D/eglCodecCommon(15825): setVertexArrayObject: set vao to 0 (0) 1 0
D/SharedPreferencesImpl(15825): Time required to fsync /data/user/0/com.example.finalsafehub/shared_prefs/FirebaseHeartBeatW0RFRkFVTFRd+MTo3OTk3MTA4NTY2MDg6YW5kcm9pZDo1NGU5MjU2OWNjOWZiMTIwOGYxMGM1.xml: [<1: 0, <2: 0, <4: 0, <8: 0, <16: 0, <32: 0, <64: 0, <128: 0, <256: 0, <512: 0, <1024: 0, <2048: 0, <4096: 1, <8192: 0, <16384: 0, >=16384: 0]
D/SharedPreferencesImpl(15825): Time required to fsync /data/user/0/com.example.finalsafehub/shared_prefs/FirebaseHeartBeatW0RFRkFVTFRd+MTo3OTk3MTA4NTY2MDg6YW5kcm9pZDo1NGU5MjU2OWNjOWZiMTIwOGYxMGM1.xml: [<1: 0, <2: 0, <4: 0, <8: 0, <16: 0, <32: 0, <64: 0, <128: 0, <256: 0, <512: 0, <1024: 0, <2048: 0, <4096: 1, <8192: 1, <16384: 0, >=16384: 0]
W/FirebaseInstanceId(15825): Token retrieval failed: SERVICE_NOT_AVAILABLE. Will retry token retrieval
D/SharedPreferencesImpl(15825): Time required to fsync /data/user/0/com.example.finalsafehub/shared_prefs/com.google.android.gms.appid.xml: [<1: 0, <2: 0, <4: 0, <8: 0, <16: 0, <32: 0, <64: 0, <128: 0, <256: 0, <512: 0, <1024: 0, <2048: 1, <4096: 0, <8192: 0, <16384: 0, >=16384: 0] 

this is my error .. any solution?

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

void main() async{
  WidgetsFlutterBinding.ensureInitialized();

  await Firebase.initializeApp();
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Notification',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Test(),
    );
  }
}

class Test extends StatefulWidget {
  @override
  State<Test> createState() => TestState();
}

class TestState extends State<Test> {
  getToken()async{
   String? mytoken= await FirebaseMessaging.instance.getToken();
   print("============================================");
   print(mytoken);
  }
@override
void initState(){
getToken();
  super.initState();
}

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Notification'),
      ), // AppBar
      body: Container(),
    );
  }
}
my code