<p dir="auto">Flutter crash report; please file at <a href="https://github.com/flutter/flutter/issues">https://github.com/flutter/flutter/issues</a>.</p>
<h2 dir="auto">command</h2>
<p dir="auto">flutter run</p>
<h2 dir="auto">exception</h2>
<p dir="auto">FormatException: FormatException: Bad UTF-8 encoding 0xc3 (at offset 171)</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="#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&amp;&amp;_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:1654)
#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&amp;&amp;_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.&lt;anonymous closure&gt; (dart:io-patch/socket_patch.dart:1231)
#23     _NativeSocket.issueReadEvent.issue (dart:io-patch/socket_patch.dart:784)
#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)"><pre class="notranslate"><code class="notranslate">#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&amp;&amp;_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:1654)
#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&amp;&amp;_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.&lt;anonymous closure&gt; (dart:io-patch/socket_patch.dart:1231)
#23     _NativeSocket.issueReadEvent.issue (dart:io-patch/socket_patch.dart:784)
#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)
</code></pre></div>
<h2 dir="auto">flutter doctor</h2>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="[✓] Flutter (Channel beta, v0.1.5, on Microsoft Windows [Version 10.0.16299.125], locale zh-CN)
    • Flutter version 0.1.5 at C:\Users\chilkey\flutter
    • Framework revision 3ea4d06340 (4 weeks ago), 2018-02-22 11:12:39 -0800
    • Engine revision ead227f118
    • Dart version 2.0.0-dev.28.0.flutter-0b4f01f759

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at C:\Users\chilkey\AppData\Local\Android\Sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-27, build-tools 27.0.3
    • ANDROID_HOME = C:\Users\chilkey\AppData\Local\Android\Sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[✓] Android Studio (version 3.0)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[✓] IntelliJ IDEA Ultimate Edition (version 2017.2)
    • Flutter plugin version 20.0.2
    • Dart plugin version 172.4343.25

[✓] VS Code (version 1.21.1)
    • VS Code at C:\Program Files\Microsoft VS Code
    • Dart Code extension version 2.10.0

[✓] Connected devices (1 available)
    • m2 • 88UFBME24EHD • android-arm64 • Android 5.1 (API 22)

• No issues found!"><pre class="notranslate"><code class="notranslate">[✓] Flutter (Channel beta, v0.1.5, on Microsoft Windows [Version 10.0.16299.125], locale zh-CN)
    • Flutter version 0.1.5 at C:\Users\chilkey\flutter
    • Framework revision 3ea4d06340 (4 weeks ago), 2018-02-22 11:12:39 -0800
    • Engine revision ead227f118
    • Dart version 2.0.0-dev.28.0.flutter-0b4f01f759

[✓] Android toolchain - develop for Android devices (Android SDK 27.0.3)
    • Android SDK at C:\Users\chilkey\AppData\Local\Android\Sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-27, build-tools 27.0.3
    • ANDROID_HOME = C:\Users\chilkey\AppData\Local\Android\Sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[✓] Android Studio (version 3.0)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)

[✓] IntelliJ IDEA Ultimate Edition (version 2017.2)
    • Flutter plugin version 20.0.2
    • Dart plugin version 172.4343.25

[✓] VS Code (version 1.21.1)
    • VS Code at C:\Program Files\Microsoft VS Code
    • Dart Code extension version 2.10.0

[✓] Connected devices (1 available)
    • m2 • 88UFBME24EHD • android-arm64 • Android 5.1 (API 22)

• No issues found!
</code></pre></div>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="~/Code/flutter/examples/material_gallery[master] $ flutter --version
Flutter on channel master (from git@github.com:flutter/flutter.git)
Framework revision c167efc (10 minutes ago); engine revision 4062813"><pre class="notranslate"><code class="notranslate">~/Code/flutter/examples/material_gallery[master] $ flutter --version
Flutter on channel master (from git@github.com:flutter/flutter.git)
Framework revision c167efc (10 minutes ago); engine revision 4062813
</code></pre></div>
<p dir="auto">Output:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="~/Code/flutter/examples/material_gallery[master] $ flutter build apk &amp;&amp; flutter install
Building APK in debug mode (android-arm)...
Warning: signing the APK using the debug keystore.
Built build/app.apk (19.6MB).
Installing app.apk to Nexus 5...
Installing app.apk on device."><pre class="notranslate"><code class="notranslate">~/Code/flutter/examples/material_gallery[master] $ flutter build apk &amp;&amp; flutter install
Building APK in debug mode (android-arm)...
Warning: signing the APK using the debug keystore.
Built build/app.apk (19.6MB).
Installing app.apk to Nexus 5...
Installing app.apk on device.
</code></pre></div>
<p dir="auto">Notice the "Installing app.apk" and "Installing app.apk"</p>