关于dart：Flutter错误：当前的Flutter SDK版本为2.1.0-dev.0.0.flutter-be6309690f

Flutter Error: The current Flutter SDK version is 2.1.0-dev.0.0.flutter-be6309690f

我刚刚升级了我的Flutter，升级后我无法在Android Studio上运行任何Flutter项目。我收到此错误消息。

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The current Dart SDK version is 2.1.0-dev.0.0.flutter-be6309690f.

Because buddy depends on flutter_built_redux 0.4.5 which requires SDK
version >=1.19.0 <2.0.0, version solving failed.
pub get failed (1)

我如何降级Dart或如何解决此问题，因为我在Mac上运行android studio。

我尝试通过更改颤振通道dev和master来进行尝试，但这没有什么不同。

颤振医生-v结果：

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[?] Flutter (Channel dev, v0.6.0, on Mac OS X 10.13.4 17E202, locale en-IN)
? Flutter version 0.6.0 at /Users/pro/Downloads/flutter
? Framework revision 9299c02cf7 (5 days ago), 2018-08-16 00:35:12 +0200
? Engine revision e3687f70c7
? Dart version 2.1.0-dev.0.0.flutter-be6309690f

[?] Android toolchain - develop for Android devices (Android SDK 27.0.3)
? Android SDK at /Users/pro/Library/Android/sdk
? Android NDK location not configured (optional; useful for native
profiling support)
? Platform android-27, build-tools 27.0.3
? Java binary at: /Applications/Android
Studio.app/Contents/jre/jdk/Contents/Home/bin/java
? Java version OpenJDK Runtime Environment (build 1.8.0_152-release-
1024-b01)
? All Android licenses accepted.

[?] iOS toolchain - develop for iOS devices (Xcode 9.4.1)
? Xcode at /Applications/Xcode.app/Contents/Developer
? Xcode 9.4.1, Build version 9F2000
? ios-deploy 1.9.2
? CocoaPods version 1.5.0

[?] Android Studio (version 3.1)
? Android Studio at /Applications/Android Studio.app/Contents
? Flutter plugin version 27.1.1
? Dart plugin version 173.4700
? Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)

[!] Connected devices
! No devices available