【发布时间】：2020-08-26 19:12:30
【问题描述】：
我创建了一个新的 Flutter 项目，然后运行命令
flutter channel beta
flutter upgrade
flutter config --enable-web
这是我的颤振医生
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel beta, v1.17.0, on Mac OS X 10.15.2 19C57, locale zh-Hans-CN)
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[✓] Xcode - develop for iOS and macOS (Xcode 11.4.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 3.5)
[✓] IntelliJ IDEA Ultimate Edition (version 2019.3.1)
[!] Proxy Configuration
! NO_PROXY is not set
[✓] Connected device (2 available)
! Doctor found issues in 1 category.
当我运行 flutter run -d Chrome --verbose 时，我得到一个错误
Unable to connect to Chrome debug port: 51656
FormatException: Unexpected character (at character 1)
<html>
^
#0 throwToolExit (package:flutter_tools/src/base/common.dart:14:3)
#1 ChromeLauncher._connect (package:flutter_tools/src/web/chrome.dart:251:9)
<asynchronous suspension>
#2 ChromeLauncher.launch (package:flutter_tools/src/web/chrome.dart:183:12)
<asynchronous suspension>
#3 ChromeDevice.startApp (package:flutter_tools/src/web/web_device.dart:142:46)
#4 _ResidentWebRunner.run.<anonymous closure>
(package:flutter_tools/src/build_runner/resident_web_runner.dart:443:29)
#5 _rootRunUnary (dart:async/zone.dart:1192:38)
#6 _CustomZone.runUnary (dart:async/zone.dart:1085:19)
#7 _FutureListener.handleValue (dart:async/future_impl.dart:141:18)
#8 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:682:45)
#9 Future._propagateToListeners (dart:async/future_impl.dart:711:32)
#10 Future._completeWithValue (dart:async/future_impl.dart:526:5)
#11 _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:36:15)
#12 _completeOnAsyncReturn (dart:async-patch/async_patch.dart:298:13)
#13 _ResidentWebRunner._updateDevFS (package:flutter_tools/src/build_runner/resident_web_runner.dart)
#14 _rootRunUnary (dart:async/zone.dart:1192:38)
#15 _CustomZone.runUnary (dart:async/zone.dart:1085:19)
#16 _FutureListener.handleValue (dart:async/future_impl.dart:141:18)
#17 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:682:45)
#18 Future._propagateToListeners (dart:async/future_impl.dart:711:32)
#19 Future._completeWithValue (dart:async/future_impl.dart:526:5)
#20 _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:36:15)
#21 _completeOnAsyncReturn (dart:async-patch/async_patch.dart:298:13)
#22 WebDevFS.update (package:flutter_tools/src/build_runner/devfs_web.dart)
#23 _rootRunUnary (dart:async/zone.dart:1192:38)
#24 _CustomZone.runUnary (dart:async/zone.dart:1085:19)
#25 _FutureListener.handleValue (dart:async/future_impl.dart:141:18)
#26 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:682:45)
#27 Future._propagateToListeners (dart:async/future_impl.dart:711:32)
#28 Future._completeWithValue (dart:async/future_impl.dart:526:5)
#29 Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:556:7)
#30 _rootRun (dart:async/zone.dart:1184:13)
#31 _CustomZone.run (dart:async/zone.dart:1077:19)
#32 _CustomZone.runGuarded (dart:async/zone.dart:979:7)
#33 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1019:23)
#34 _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
#35 _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)
#36 _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:118:13)
#37 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:169:5)
【问题讨论】：
标签： flutter flutter-web