Can't build WebGL because of IL2CPP crash

Hello, when I try to build my game for the WebGL platform I get an error message that says il2cpp.exe is not responding and in the Unity(v. 2017.1.0f3) console I get this: (Perhaps this is due to the fact that the project was assembled in old version 5.5.2. but now i was trying build it in 2k17...)

Failed running C:\Program Files\Unity\Editor\Data\il2cpp/build/il2cpp.exe --convert-to-cpp --compile-cpp --libil2cpp-static --platform="WebGL" --architecture="EmscriptenJavaScript" --configuration="Release" --outputpath="D:\Unity_Projects\СТарые проекты\FlappyBirdStyle_Project\Assets /../Temp/StagingArea/Data\Native\build.bc" --cachedirectory="D:\Unity_Projects\СТарые проекты\FlappyBirdStyle_Project\Assets..\Library/il2cpp_cache" --compiler-flags="-Oz -DIL2CPP_EXCEPTION_DISABLED=1 " --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_AIModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_AnimationModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_AudioModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_BaselibModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_ClothModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_CloudWebServicesModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_CoreModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_CrashReportingModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_DirectorModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_FacebookModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_GameCenterModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_ImageConversionModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_IMGUIModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_InputModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_JSONSerializeModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_ParticlesLegacyModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_ParticleSystemModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_PerformanceReportingModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_Physics2DModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_PhysicsModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_ScreenCaptureModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_SpriteMaskModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_StyleSheetsModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_TerrainModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_TerrainPhysicsModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_TextRenderingModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_TimelineModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_UIElementsModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_UIModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_UmbraModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_UNETModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityAnalyticsModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityConnectModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestAudioModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestTextureModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestWWWModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_VehiclesModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_VideoModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_VRModule_Dynamic.bc" --additional-libraries="C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_WebModule_Dynamic.bc" --map-file-parser="C:\Program Files\Unity\Editor\Data\Tools\MapFileParser\MapFileParser.exe" --assembly="D:\Unity_Projects\СТарые проекты\FlappyBirdStyle_Project\Temp\StagingArea\Data\Managed\Assembly-CSharp.dll" --assembly="D:\Unity_Projects\СТарые проекты\FlappyBirdStyle_Project\Temp\StagingArea\Data\Managed\Facebook.Unity.Settings.dll" --assembly="D:\Unity_Projects\СТарые проекты\FlappyBirdStyle_Project\Temp\StagingArea\Data\Managed\UnityEngine.UI.dll" --assembly="D:\Unity_Projects\СТарые проекты\FlappyBirdStyle_Project\Temp\StagingArea\Data\Managed\UnityEngine.Analytics.dll" --assembly="D:\Unity_Projects\СТарые проекты\FlappyBirdStyle_Project\Temp\StagingArea\Data\Managed\UnityEngine.dll" --generatedcppdir="D:\Unity_Projects\СТарые проекты\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput"

stdout: Building build.bc with EmscriptenToolChain. Output directory: D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\Native Cache directory: D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Library\il2cpp_cache il2cpp.exe didn't catch exception: Unity.IL2CPP.Building.BuilderFailedException: WARNING:root:did not see a source tree above or next to the LLVM root directory (guessing based on directory of C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten_FastComp_Win\llc), could not verify version numbers match INFO:root:(Emscripten: Running sanity checks) WARNING:root:java does not seem to exist, required for closure compiler, which is optional (define JAVA in C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\emscripten.config if you want it) WARNING:root:closure compiler will not be available In file included from D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:18: In file included from C:\Program Files\Unity\Editor\Data\il2cpp\libil2cpp\codegen/il2cpp-codegen.h:30: C:\Program Files\Unity\Editor\Data\il2cpp\libil2cpp\codegen/il2cpp-codegen-il2cpp.h:342:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:33478:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:34045:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:34614:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:35183:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:35752:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:36321:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:36890:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:37459:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:38028:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:38597:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:39166:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:39735:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:40304:1: warning: control may reach end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:40496:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:40589:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:40899:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:40992:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:41300:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:41393:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:41703:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:41796:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:42106:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:42199:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:42509:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:42602:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:42912:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:43005:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:43315:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:43408:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:43718:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:43811:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:44121:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ D:\Unity_Projects\������ �஥���\FlappyBirdStyle_Project\Temp\StagingArea\Data\il2cppOutput\Bulk_Generics_5.cpp:44214:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ 34 warnings generated. C:\Program Files\Unity\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten_FastComp_Win\opt: D:\Unity_Projects\??????