Steps to Reproduce

I am a Android developer. Develop IDE is android stodio 3.0.1.
I upgrade Flutter to 0.2.12 in yesterday.

But when i running my project, It made a mistake.

Logs

Run my application with flutter run , and all logs is :

D:\android\git_aliyun\xlcrm>flutter run
Launching lib/main.dart on Redmi Note 3 in debug mode...
Initializing gradle...
Skipping compilation. Fingerprint match.

Oops; flutter has exited unexpectedly.

and it's over.......

But it created a flutter_01.log in my project root director. it's here :

Flutter crash report; please file at https://github.com/flutter/flutter/issues.

command

flutter run

exception

FormatException: FormatException: Bad UTF-8 encoding 0xe4 (at offset 9)

#0      _Utf8Decoder.convert (dart:convert/utf.dart:490)
#1      _Utf8ConversionSink.addSlice (dart:convert/string_conversion.dart:345)
#2      _Utf8ConversionSink.add (dart:convert/string_conversion.dart:341)
#3      _ConverterStreamEventSink.add (dart:convert/chunked_conversion.dart:86)
#4      _SinkTransformerStreamSubscription._handleData (dart:async/stream_transformers.dart:120)
#5      _rootRunUnary (dart:async/zone.dart:1134)
#6      _CustomZone.runUnary (dart:async/zone.dart:1031)
#7      _CustomZone.runUnaryGuarded (dart:async/zone.dart:933)
#8      _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:330)
#9      _BufferingStreamSubscription._add (dart:async/stream_impl.dart:257)
#10     _StreamController&&_SyncStreamControllerDispatch._sendData (dart:async/stream_controller.dart:763)
#11     _StreamController._add (dart:async/stream_controller.dart:639)
#12     _StreamController.add (dart:async/stream_controller.dart:585)
#13     _Socket._onData (dart:io-patch/socket_patch.dart:1674)
#14     _rootRunUnary (dart:async/zone.dart:1138)
#15     _CustomZone.runUnary (dart:async/zone.dart:1031)
#16     _CustomZone.runUnaryGuarded (dart:async/zone.dart:933)
#17     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:330)
#18     _BufferingStreamSubscription._add (dart:async/stream_impl.dart:257)
#19     _StreamController&&_SyncStreamControllerDispatch._sendData (dart:async/stream_controller.dart:763)
#20     _StreamController._add (dart:async/stream_controller.dart:639)
#21     _StreamController.add (dart:async/stream_controller.dart:585)
#22     new _RawSocket.<anonymous closure> (dart:io-patch/socket_patch.dart:1247)
#23     _NativeSocket.issueReadEvent.issue (dart:io-patch/socket_patch.dart:799)
#24     _microtaskLoop (dart:async/schedule_microtask.dart:41)
#25     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50)
#26     _runPendingImmediateCallback (dart:isolate-patch/dart:isolate/isolate_patch.dart:113)
#27     _RawReceivePortImpl._handleMessage (dart:isolate-patch/dart:isolate/isolate_patch.dart:166)

flutter doctor

[✓] Flutter (Channel master, v0.2.12-pre.30, on Microsoft Windows [Version 6.1.7601], locale zh-CN)
    • Flutter version 0.2.12-pre.30 at D:\flutterSdk\flutter
    • Framework revision 1c3f6a851f (21 hours ago), 2018-04-12 21:16:39 -0700
    • Engine revision 76cb311d9c
    • Dart version 2.0.0-dev.47.0.flutter-f76dad0adc

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at E:\android\studio-sdk
    • Android NDK at E:\android\studio-sdk\ndk-bundle
    • Platform android-P, build-tools 27.0.3
    • ANDROID_HOME = E:\android\studio-sdk
    • Java binary at: E:\android\as\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)
    • All Android licenses accepted.

[✓] Android Studio (version 3.0)
    • Android Studio at E:\android\as
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[✓] Connected devices (1 available)
    • Redmi Note 3 • JNY969CI99999999 • android-arm64 • Android 5.0.2 (API 21)

• No issues found!

Flutter plugin and Dart plugin was intalled:

flutter plugin screenshot
dart plugin screenshot

How can i fixed it ? Thanks !