Launching lib\main.dart on LLD AL00 in debug mode...
Initializing gradle...
Resolving dependencies...
Running Gradle task 'assembleDebug'...
U
nhandled exception:
NoSuchMethodError: The getter 'asLibrary' was called on null.
Receiver: null
Tried calling:
 asLibrary
#0      Object.noSuchMethod (dart:core/runtime/libobject_patch.dart:50:5)
#1      LibraryDependency.targetLibrary (package:kernel/ast.dart:507:57)
#2      BuilderGraph.neighborsOf (package:front_end/src/fasta/builder_graph.dart:55:30)
#3      _SyncIterator.moveNext (dart:core/runtime/libcore_patch.dart:152:12)
#4      IncrementalCompiler.computeReusedLibraries (package:front_end/src/fasta/incremental_compiler.dart:635:34)
#5      IncrementalCompiler.computeDelta.<anonymous closure> (package:front_end/src/fasta/incremental_compiler.dart:207:46)
<asynchronous suspension>
#6      CompilerContext.runInContext.<anonymous closure>.<anonymous closure> (package:front_end/src/fasta/compiler_context.dart:122:46)
#7      new Future.sync (dart:async/future.dart:224:31)
#8      CompilerContext.runInContext.<anonymous closure> (package:front_end/src/fasta/compiler_context.dart:122:19)
#9      _rootRun (dart:async/zone.dart:1124:13)
#10     _CustomZone.run (dart:async/zone.dart:1021:19)
#11     _runZo
ned (dart:async/zone.dart:1516:10)
#12     runZoned (dart:async/zone.dart:1463:12)
#13     CompilerContext.runInContext (package:fro
nt_end/src/fasta/compiler_context.dart:121:12)
#14     IncrementalCompiler.computeDelta (package:front_end/src/fasta/incremental_compiler.dart:113:20)
<asynchronous suspension>
#15     IncrementalCompiler.compile (pac
kage:vm/incremental_compiler.dart:50:44)
<asynchronous suspension>
#16     FrontendCompiler.compil
e.<anonymous closure> (package:vm/frontend_server.dart:339:67)
#17     new Future.<anonymous closure> (dart:asyn
c/future.dart:176:37)
#18     _rootRun (dart:async/zone.dart:1120:38)
#19     _CustomZone.run (dart:async
/zone.dart:1021:19)
#20     _CustomZone.runGuarded (dart:async/zone.dart:923:7)
#21     _CustomZone.bindCallbackGuard
ed.<anonymous closure> (dart:async/zone.dart:963:23)
#22     _rootRun (dart:async/zone.dart:1124:13)
#
23     _CustomZone.run (dart:async/zone.dart:1021:19)
#24     _CustomZone.bindCallback.<anonymous closure> (
dart:async/zone.dart:947:23)
#25     Timer._createTimer.<anonymous closure> (dart:async/runtime/libtimer_
patch.dart:21:15)
#26     _Timer._runTimers (dart:isolate/runtime/libtimer_impl.dart:382:19)
#27    
 _Timer._handleMessage (dart:isolate/runtime/libtimer_impl.dart:416:5)
#28     _RawReceivePortImpl._h
andleMessage (dart:isolate/runtime/libisolate_patch.dart:171:12)

Compiler failed on C:\Users\cm\Desktop\Github\GSYGithubAppFlutter\lib\main.dart

FAILURE: Build failed with an exception.

* Where:
Script 'C:\flutter\flutter_windows_v1.2.0-dev\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 545

* What went wrong:
Execution failed for task ':app:flutterBuildDebug'.
> Process 'command 'C:\flutter\flutter_windows_v1.2.0-dev\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 5s
Finished with error: Gradle task assembleDebug failed with exit code 1