Flutter: GoogleSignIn 처리되지 않은 예외

나는 GoogleSignIn 플러그인을 사용하여 이상한 문제에 직면하고 있습니다. 저는 지금 몇 달 동안 Google 로그인을 사용하지 않았으며, 이 문제에 직면했을 때 오늘 다시 연결하기로 결정했습니다.

다음 테스트 코드를 사용하고 있습니다.

google_sign_in: "^1.0.1"
  firebase_auth: "^0.2.3"

import 'dart:async';

import "package:flutter/material.dart";
import "package:firebase_auth/firebase_auth.dart";
import "package:google_sign_in/google_sign_in.dart";


final FirebaseAuth _auth = FirebaseAuth.instance;
final GoogleSignIn _googleSignIn = new GoogleSignIn();

 _testSignInWithGoogle() async {
  final GoogleSignInAccount googleUser = await _googleSignIn.signIn();
  final GoogleSignInAuthentication googleAuth =
  await googleUser.authentication;
  final FirebaseUser user = await _auth.signInWithGoogle(
    accessToken: googleAuth.accessToken,
    idToken: googleAuth.idToken,
  );
  print (googleUser.displayName);
  return (user);
}
class TestSignIn extends StatefulWidget {
  <strong i="9">@override</strong>
  _TestSignInState createState() => new _TestSignInState();
}

class _TestSignInState extends State<TestSignIn> {
   <strong i="10">@override</strong>
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(title: new Text("test"),
      ),
      body: new Column(
        children: <Widget>[
          new FlatButton(onPressed: ()=>_testSignInWithGoogle(), child: new Text("Test SignIn Google"),),
          //print user
        ],
      )
    );
  }
}



md5-479999e22daf708410ceaf35566d1955




E/flutter (13210): [ERROR:topaz/lib/tonic/logging/dart_error.cc(16)] Unhandled exception:
E/flutter (13210): PlatformException(status, Status{statusCode=DEVELOPER_ERROR, resolution=null}, null)
E/flutter (13210): #0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:514)
E/flutter (13210): #1      MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:154)
E/flutter (13210): <asynchronous suspension>
E/flutter (13210): #2      GoogleSignIn._callMethod (package:google_sign_in/google_sign_in.dart:156)
E/flutter (13210): <asynchronous suspension>
E/flutter (13210): #3      GoogleSignIn._addMethodCall (package:google_sign_in/google_sign_in.dart:180)
E/flutter (13210): #4      GoogleSignIn.signIn (package:google_sign_in/google_sign_in.dart:237)
E/flutter (13210): #5      _testSignInWithGoogle (package:full3/TestSignIn.dart:12)
E/flutter (13210): <asynchronous suspension>
E/flutter (13210): #6      _TestSignInState.build.<anonymous closure> (package:full3/TestSignIn.dart:47)
E/flutter (13210): #7      _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:323)
E/flutter (13210): #8      _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:375)
E/flutter (13210): #9      GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:102)
E/flutter (13210): #10     TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:161)
E/flutter (13210): #11     TapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:94)
E/flutter (13210): #12     PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:315)
E/flutter (13210): #13     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:73)
E/flutter (13210): #14     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:101)
E/flutter (13210): #15     BindingBase&SchedulerBinding&GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:143)
E/flutter (13210): #16     BindingBase&SchedulerBinding&GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:121)
E/flutter (13210): #17     BindingBase&SchedulerBinding&GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:101)
E/flutter (13210): #18     BindingBase&SchedulerBinding&GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:64)
E/flutter (13210): #19     BindingBase&SchedulerBinding&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:48)
E/flutter (13210): #20     _invoke1 (file:///b/build/slave/Linux_Engine/build/src/flutter/lib/ui/hooks.dart:105)
E/flutter (13210): #21     _dispatchPointerDataPacket (file:///b/build/slave/Linux_Engine/build/src/flutter/lib/ui/hooks.dart:63)
D/EGL_emulation(13210): eglMakeCurrent: 0xa9205720: ver 3 0 (tinfo 0x946fc060)

Firebase 측에서라면이 문제를 생각하지 않습니다. Firebase가 내 앱으로 올바르게 구성되었으며 사용자 이름/비밀번호로 제대로 작동합니다.