我的"hello world"颤振应用程序在运行时产生编译时异常，我不知道为什么，你能帮忙吗？
Launching libmain.dart on Android SDK built for x86 in debug mode...
Initializing gradle...
Resolving dependencies...
Gradle task 'assembleDebug'...
Built buildappoutputsapkdebugapp-debug.apk.
Installing buildappoutputsapkapp.apk...
I/Choreographer(11667): Skipped 38 frames! The application may be doing too much work on its main thread.
D/EGL_emulation(11667): eglMakeCurrent: 0x9fe05840: ver 3 0 (tinfo 0x9fe038e0)
Syncing files to device Android SDK built for x86...
I/flutter (11667): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter (11667): The following _CompileTimeError was thrown building WidgetsApp-[GlobalObjectKey
I/flutter (11667): _MaterialAppState#bcca2](dirty, state: _WidgetsAppState#2be90):
I/flutter (11667): 'package:flutter/src/widgets/app.dart': error: line 1129 pos 21:
I/flutter (11667): file:///D:/Flutter/flutter/packages/flutter/lib/src/widgets/app.dart:1129:21: Error: Too few
I/flutter (11667): positional arguments: 1 required, 0 given.
I/flutter (11667): result = Stack(
I/flutter (11667): ^
I/flutter (11667): result = Stack(
I/flutter (11667): ^
I/flutter (11667):
I/flutter (11667): When the exception was thrown, this was the stack:
I/flutter (11667): #0 StatefulElement.build (package:flutter/src/widgets/framework.dart:3809:27)
I/flutter (11667): #1 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3721:15)
I/flutter (11667): #2 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #3 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #4 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11)
I/flutter (11667): #5 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #6 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #7 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #8 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #9 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #10 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #11 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #12 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #13 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #14 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #15 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #16 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #17 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #18 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #19 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #20 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #21 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #22 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #23 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #24 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #25 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #26 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #27 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #28 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #29 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11)
I/flutter (11667): #30 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #31 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #32 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #33 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #34 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #35 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #36 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #37 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #38 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #39 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16)
I/flutter (11667): #40 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5)
I/flutter (11667): #41 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5)
I/flutter (11667): #42 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11)
I/flutter (11667): #43 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5)
I/flutter (11667): #44 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14)
I/flutter (11667): #45 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12)
I/flutter (11667): #46 RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:909:16)
I/flutter (11667): #47 RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:880:5)
I/flutter (11667): #48 RenderObjectToWidgetAdapter.attachToRenderTree.<anonymous closure> (package:flutter/src/widgets/binding.dart:826:17)
I/flutter (11667): #49 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2266:19)
I/flutter (11667): #50 RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:825:13)
I/flutter (11667): #51 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:712:7)
I/flutter (11667): #52 runApp (package:flutter/src/widgets/binding.dart:756:7)
I/flutter (11667): #53 main (package:new_flutter_app_demo/main.dart:4:3)
I/flutter (11667): #54 _startIsolate.<anonymous closure> (dart:isolate/runtime/libisolate_patch.dart:289:19)
I/flutter (11667): #55 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:171:12)
I/flutter (11667): ════════════════════════════════════════════════════════════════════════════════════════════════════
D/ (11667): HostConnection::get() New Host Connection established 0x8bae6140, tid 11694
D/EGL_emulation(11667): eglMakeCurrent: 0xa7a652e0: ver 3 0 (tinfo 0x9fb09ac0)
抱歉回答晚了。请删除颤振 sdk 并重新安装颤振 sdk，这是完整的工作。
在 Flutter 安装目录中执行以下命令应该可以修复它
git clean -xfd
git stash save --keep-index
git stash drop
git pull
flutter doctor