flutterのエミュレータ―で起動できない

Launching lib\main.dart on sdk gphone64 x86 64 in debug mode...
Running Gradle task 'assembleDebug'...
√  Built build\app\outputs\flutter-apk\app-debug.apk.
Installing build\app\outputs\flutter-apk\app-debug.apk...
Debug service listening on ws://127.0.0.1:55842/MuWl9idi9BE=/ws
Syncing files to device sdk gphone64 x86 64...
D/ProfileInstaller( 8671): Installing profile for com.example.untitled
E/flutter ( 8671): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: Binding mixin instance is null but bindings are already initialized.
E/flutter ( 8671): The "instance" property of the ServicesBinding binding mixin was accessed, but that binding was not initialized when the "initInstances()" method was called.
E/flutter ( 8671): This probably indicates that the ServicesBinding mixin was not mixed into the class that was used to initialize the binding. If this is a custom binding mixin, there must also be a custom binding class, like WidgetsFlutterBinding, but that mixes in the selected binding. If this is a test binding, check that the binding being initialized is the same as the one into which the test binding is mixed.
E/flutter ( 8671): It is also possible that ServicesBinding does not implement "initInstances()" to assign a value to "instance". See the documentation of the BindingBase class for more details.
E/flutter ( 8671): The binding that was initialized was of the type "null".
E/flutter ( 8671): #0      BindingBase.checkInstance.<anonymous closure> (package:flutter/src/foundation/binding.dart:329:9)
E/flutter ( 8671): #1      BindingBase.checkInstance (package:flutter/src/foundation/binding.dart:389:6)
E/flutter ( 8671): #2      ServicesBinding.instance (package:flutter/src/services/binding.dart:56:54)
E/flutter ( 8671): #3      _findBinaryMessenger (package:flutter/src/services/platform_channel.dart:136:25)
E/flutter ( 8671): #4      BasicMessageChannel.binaryMessenger (package:flutter/src/services/platform_channel.dart:181:56)
E/flutter ( 8671): #5      BasicMessageChannel.send (package:flutter/src/services/platform_channel.dart:195:38)
E/flutter ( 8671): #6      FirebaseCoreHostApi.initializeCore (package:firebase_core_platform_interface/src/pigeon/messages.pigeon.dart:208:52)
E/flutter ( 8671): #7      MethodChannelFirebase._initializeCore (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:29:54)
E/flutter ( 8671): #8      MethodChannelFirebase.initializeApp (package:firebase_core_platform_interface/src/method_channel/method_channel_firebase.dart:73:13)
E/flutter ( 8671): #9      Firebase.initializeApp (package:firebase_core/src/firebase.dart:43:47)
E/flutter ( 8671): #10     main (package:untitled/main.dart:15:18)
E/flutter ( 8671): #11     _runMain.<anonymous closure> (dart:ui/hooks.dart:159:23)
E/flutter ( 8671): #12     _delayEntrypointInvocation.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:296:19)
E/flutter ( 8671): #13     _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:189:12)
E/flutter ( 8671):