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Got compiler error when building and running the example app #92

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Got compiler error when building and running the example app#92
@sebastiantoro

Description

@sebastiantoro
sebastiantoro
opened on Jun 10, 2020

Hello guys,

I followed the Readme.md instructions:

  1. Running flutter doctor threw:
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel beta, 1.18.0-11.1.pre, on Microsoft Windows [Versión 10.0.17134.950], locale es-CL)

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[√] Chrome - develop for the web
[√] Android Studio (version 3.6)
[√] Connected device (3 available)

• No issues found!
  1. Then I got the sources and the packages:
flutter channel beta
flutter upgrade
flutter config --enable-web
git clone https://github.com/cloudwebrtc/dart-sip-ua.git
cd dart-sip-ua/example
flutter create .
flutter pub get
  1. And when running flutter run -d chrome the error I got was:
Compiler message:
../lib/src/logger.dart:99:8: Error: The return type of the method 'MyLogPrinter.log' is 'void', which does not match the return type, 'List<String>', of the overridden method, 'LogPrinter.log'.
 - 'List' is from 'dart:core'.
Change to a subtype of 'List<String>'.
  void log(LogEvent event) {
       ^
../../../../Herramientas/Flutter/.pub-cache/hosted/pub.dartlang.org/logger-0.9.1/lib/src/log_printer.dart:15:16: Context: This is the overridden method ('log').
  List<String> log(LogEvent event);
               ^

Compiler message:
../lib/src/logger.dart:99:8: Error: The return type of the method 'MyLogPrinter.log' is 'void', which does not match the return type, 'List<String>', of the overridden method, 'LogPrinter.log'.
 - 'List' is from 'dart:core'.
Change to a subtype of 'List<String>'.
  void log(LogEvent event) {
       ^
../../../../Herramientas/Flutter/.pub-cache/hosted/pub.dartlang.org/logger-0.9.1/lib/src/log_printer.dart:15:16: Context: This is the overridden method ('log').
  List<String> log(LogEvent event);
               ^
Target kernel_snapshot failed: Exception: Errors during snapshot creation: null
build failed.

FAILURE: Build failed with an exception.

* Where:
Script 'C:\Users\storo\OneDrive - Colaboracion Virtual\Herramientas\Flutter\packages\flutter_tools\gradle\flutter.gradle' line: 896

* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\Users\storo\OneDrive - Colaboracion Virtual\Herramientas\Flutter\bin\flutter.bat'' finished with non-zero exit value 1

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 18s
Exception: Gradle task assembleDebug failed with exit code 1
  1. Running flutter run -d chrome -v gave me the following output:
[   +8 ms] executing: [C:\Users\myuser\OneDrive - Colaboracion Virtual\Herramientas\Flutter/] git -c log.showSignature=false log -n 1 --pretty=format:%H
[  +52 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
[        ] 2738a1148ba6c9a6114df62358109407c3ef2553
[        ] executing: [C:\Users\myuser\OneDrive - Colaboracion Virtual\Herramientas\Flutter/] git tag --contains HEAD
[ +183 ms] Exit code 0 from: git tag --contains HEAD
[   +1 ms] 1.18.0-11.1.pre
[  +11 ms] executing: [C:\Users\myuser\OneDrive - Colaboracion Virtual\Herramientas\Flutter/] git rev-parse --abbrev-ref --symbolic @{u}
[  +32 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
[        ] origin/beta
[        ] executing: [C:\Users\myuser\OneDrive - Colaboracion Virtual\Herramientas\Flutter/] git ls-remote --get-url origin
[  +30 ms] Exit code 0 from: git ls-remote --get-url origin
[        ] https://github.com/flutter/flutter.git
[  +70 ms] executing: [C:\Users\myuser\OneDrive - Colaboracion Virtual\Herramientas\Flutter/] git rev-parse --abbrev-ref HEAD
[  +32 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[        ] beta
[  +51 ms] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
[  +10 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[  +20 ms] executing: C:\Users\myuser\AppData\Local\Android\sdk\platform-tools\adb.exe devices -l
[  +45 ms] List of devices attached
           DVRDU18C27000279       device product:SNE-LX3 model:SNE_LX3 device:HWSNE transport_id:2
[   +9 ms] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[   +3 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +130 ms] Found plugin flutter_webrtc at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\flutter_webrtc-0.2.8\
[  +24 ms] Found plugin shared_preferences at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.7+3\
[   +3 ms] Found plugin shared_preferences_macos at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences_macos-0.0.1+10\
[   +4 ms] Found plugin shared_preferences_web at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences_web-0.1.2+7\
[  +97 ms] Found plugin flutter_webrtc at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\flutter_webrtc-0.2.8\
[  +17 ms] Found plugin shared_preferences at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.7+3\
[   +3 ms] Found plugin shared_preferences_macos at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences_macos-0.0.1+10\
[   +5 ms] Found plugin shared_preferences_web at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences_web-0.1.2+7\
[  +91 ms] Generating C:\Users\myuser\OneDrive - Colaboracion
Virtual\Desarrollo\Flutter\dart-sip-ua\example\android\app\src\main\java\io\flutter\plugins\GeneratedPluginRegistrant.java
[ +139 ms] Launching lib\main.dart on Chrome in debug mode...
[ +112 ms] Updating assets
[ +186 ms] Syncing files to device Chrome...
[  +20 ms] Found plugin flutter_webrtc at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\flutter_webrtc-0.2.8\
[  +12 ms] Found plugin shared_preferences at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.7+3\
[   +2 ms] Found plugin shared_preferences_macos at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences_macos-0.0.1+10\
[   +4 ms] Found plugin shared_preferences_web at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences_web-0.1.2+7\
[  +35 ms] Found plugin flutter_webrtc at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\flutter_webrtc-0.2.8\
[  +12 ms] Found plugin shared_preferences at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences-0.5.7+3\
[   +3 ms] Found plugin shared_preferences_macos at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences_macos-0.0.1+10\
[   +4 ms] Found plugin shared_preferences_web at C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\.pub-cache\hosted\pub.dartlang.org\shared_preferences_web-0.1.2+7\
[  +24 ms] Generating C:\Users\myuser\OneDrive - Colaboracion
Virtual\Desarrollo\Flutter\dart-sip-ua\example\android\app\src\main\java\io\flutter\plugins\GeneratedPluginRegistrant.java
[  +79 ms] <- reset
[  +11 ms] C:\Users\myuser\OneDrive - Colaboracion Virtual\Herramientas\Flutter\bin\cache\dart-sdk\bin\dart.exe C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\bin\cache\artifacts\engine\windows-x64\frontend_server.dart.snapshot --sdk-root C:\Users\myuser\OneDrive - Colaboracion
Virtual\Herramientas\Flutter\bin\cache\flutter_web_sdk/ --incremental --target=dartdevc --debugger-module-names -Ddart.developer.causal_async_stacks=true
--output-dill C:\Users\myuser\AppData\Local\Temp\flutter_tool.b2379eb1-ab2f-11ea-9ddf-f4d108028f92\app.dill --libraries-spec
file:///C:/Users/myuser/OneDrive%20-%20Colaboracion%20Virtual/Herramientas/Flutter/bin/cache/flutter_web_sdk/libraries.json --packages .packages
-Ddart.vm.profile=false -Ddart.vm.product=false
--bytecode-options=source-positions,local-var-info,debugger-stops,instance-field-initializers,keep-unreachable-code,avoid-closure-call-instructions --enable-asserts
--track-widget-creation --filesystem-root C:\Users\myuser\AppData\Local\Temp\flutter_tools.b2379eb2-ab2f-11ea-9ddf-f4d108028f92 --filesystem-scheme org-dartlang-app
--initialize-from-dill build\cache.dill --platform
file:///C:/Users/myuser/OneDrive%20-%20Colaboracion%20Virtual/Herramientas/Flutter/bin/cache/flutter_web_sdk/kernel/flutter_ddc_sdk.dill
[  +13 ms] <- compile org-dartlang-app:/web_entrypoint.dart
[+2340 ms]
                    Compiler message:
[   +1 ms] ../lib/src/logger.dart:99:8: Error: The return type of the method 'MyLogPrinter.log' is 'void', which does not match the return type, 'List<String>', of
the overridden method, 'LogPrinter.log'.
[   +1 ms]  - 'List' is from 'dart:core'.
[        ] Change to a subtype of 'List<String>'.
[        ]   void log(LogEvent event) {
[   +1 ms]        ^
[        ] ../../../../Herramientas/Flutter/.pub-cache/hosted/pub.dartlang.org/logger-0.9.1/lib/src/log_printer.dart:15:16: Context: This is the overridden method
('log').
[   +1 ms]   List<String> log(LogEvent event);
[        ]                ^
[+22313 ms] Syncing files to device Chrome... (completed in 24.873ms, longer than expected)
[   +1 ms] Synced 0.0MB.
[   +1 ms] Failed to compile application.
[   +5 ms] "flutter run" took 25.830ms.

#0      throwToolExit (package:flutter_tools/src/base/common.dart:14:3)
#1      RunCommand.runCommand (package:flutter_tools/src/commands/run.dart:570:7)
<asynchronous suspension>
#2      FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:797:18)
#3      _rootRunUnary (dart:async/zone.dart:1192:38)
#4      _CustomZone.runUnary (dart:async/zone.dart:1085:19)
#5      _FutureListener.handleValue (dart:async/future_impl.dart:141:18)
#6      Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:686:45)
#7      Future._propagateToListeners (dart:async/future_impl.dart:715:32)
#8      Future._completeWithValue (dart:async/future_impl.dart:526:5)
#9      _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:36:15)
#10     _completeOnAsyncReturn (dart:async-patch/async_patch.dart:303:13)
#11     RunCommand.usageValues (package:flutter_tools/src/commands/run.dart)
#12     _rootRunUnary (dart:async/zone.dart:1192:38)
#13     _CustomZone.runUnary (dart:async/zone.dart:1085:19)
#14     _FutureListener.handleValue (dart:async/future_impl.dart:141:18)
#15     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:686:45)
#16     Future._propagateToListeners (dart:async/future_impl.dart:715:32)
#17     Future._completeWithValue (dart:async/future_impl.dart:526:5)
#18     Future._asyncCompleteWithValue.<anonymous closure> (dart:async/future_impl.dart:560:7)
#19     _rootRun (dart:async/zone.dart:1184:13)
#20     _CustomZone.run (dart:async/zone.dart:1077:19)
#21     _CustomZone.runGuarded (dart:async/zone.dart:979:7)
#22     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1019:23)
#23     _microtaskLoop (dart:async/schedule_microtask.dart:43:21)
#24     _startMicrotaskLoop (dart:async/schedule_microtask.dart:52:5)
#25     _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:118:13)
#26     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:169:5)

Can you please tell me why is this happening and how to solve it?

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