用户在flutter和FacebookLoginStatus.Error中以其他Facebook用户身份登录

如何解决用户在flutter和FacebookLoginStatus.Error中以其他Facebook用户身份登录

我双重检查了密码。我找不到它

   final FirebaseAuth _auth = FirebaseAuth.instance;

FacebookLogin fb = FacebookLogin（）;

未来fblogin（上下文）异步{ 尝试{ 最终结果=等待fb.logIn（权限：[enter code here FacebookPermission.publicProfile， FacebookPermission.email ]）;

  print(result.accesstoken);
  switch (result.status) {
    case FacebookLoginStatus.Success:
      print("Facebook Login Success");
      final FacebookAccesstoken accesstoken = result.accesstoken;
      AuthCredential credential =
          FacebookAuthProvider.credential(accesstoken.token);
      await _auth.signInWithCredential(credential).then((value) async {
        //
        save();

        // print('Facebook BY USER');
        if (value.additionalUserInfo.isNewUser) {
          Navigator.push(
              context,MaterialPageRoute(
                  builder: (context) => EditProfileScreen(
                        back: false,)));
        } else {
          Navigator.push(context,MaterialPageRoute(builder: (context) => main.MainTabs()));
        }
      });

      break;

    case FacebookLoginStatus.Cancel:
      print("Facebook Login Cancel");
      break;
    case FacebookLoginStatus.Error:
      print(result.toString());
      break;
  }
} catch (err) {
  _auth.signOut();
  print(err.toString());
}

}

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