[QUESTION] Dealing with bugs when switching app to Il2CPP Scripting Backend

I need to update my android app to 64 bit which requires have to use the IL2CPP Scripting Backend. But when I try to build, I'm getting these errors:



Failed running /Applications/Unity/Hub/Editor/2019.1.4f1/Unity.app/Contents/il2cpp/build/il2cppcore/il2cppcore.dll --convert-to-cpp --emit-null-checks --enable-array-bounds-check --dotnetprofile="unityaot" --compile-cpp --libil2cpp-static --platform="Android" --architecture="ARMv7" --configuration="Release" --outputpath="/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/assets/bin/Data/Native/armeabi-v7a/libil2cpp.so" --cachedirectory="/Users/nathanmeier/Desktop/iFart/Assets/../Library/il2cpp_android_armeabi-v7a/il2cpp_cache" --additional-include-directories="/Applications/Unity/Hub/Editor/2019.1.4f1/PlaybackEngines/AndroidPlayer/Tools/bdwgc/include" --additional-include-directories="/Applications/Unity/Hub/Editor/2019.1.4f1/PlaybackEngines/AndroidPlayer/Tools/libil2cpp/include" --tool-chain-path="/Applications/Unity/Hub/Editor/2019.1.4f1/PlaybackEngines/AndroidPlayer/NDK" --profiler-report --map-file-parser="/Applications/Unity/Hub/Editor/2019.1.4f1/Unity.app/Contents/Tools/MapFileParser/MapFileParser" --directory="/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/assets/bin/Data/Managed" --generatedcppdir="/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput"

stdout:
Building libil2cpp.so with AndroidToolChain
Output directory: /Users/nathanmeier/Desktop/iFart/Temp/StagingArea/assets/bin/Data/Native/armeabi-v7a
Cache directory: /Users/nathanmeier/Desktop/iFart/Library/il2cpp_android_armeabi-v7a/il2cpp_cache
ObjectFiles: 195 of which compiled: 0
Total compilation time: 460 milliseconds.
il2cpp.exe didn't catch exception: Unity.IL2CPP.Building.BuilderFailedException: /Applications/Unity/Hub/Editor/2019.1.4f1/PlaybackEngines/AndroidPlayer/NDK/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++ @"/var/folders/q7/p5kl4jk16xq2tb3v_185snp80000gn/T/tmpMqqs3h.tmp" -o "/Users/nathanmeier/Desktop/iFart/Library/il2cpp_android_armeabi-v7a/il2cpp_cache/linkresult_B8D226BE24D5F3FB94DCA8D9D63E59A5/libil2cpp.so" -shared -Wl,-soname,libil2cpp.so -Wl,--no-undefined -Wl,-z,noexecstack -Wl,--gc-sections -Wl,--build-id --sysroot "/Applications/Unity/Hub/Editor/2019.1.4f1/PlaybackEngines/AndroidPlayer/NDK/platforms/android-16/arch-arm" -gcc-toolchain "/Applications/Unity/Hub/Editor/2019.1.4f1/PlaybackEngines/AndroidPlayer/NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64" -target armv7-none-linux-androideabi -Wl,--wrap,sigaction -L "/Applications/Unity/Hub/Editor/2019.1.4f1/PlaybackEngines/AndroidPlayer/NDK/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a" -lgnustl_static -llog -rdynamic -fuse-ld=gold

/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:428: error: undefined reference to 'init'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:460: error: undefined reference to 'logout'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:460: error: undefined reference to 'logout'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:472: error: undefined reference to 'activateApp'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:472: error: undefined reference to 'activateApp'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:500: error: undefined reference to 'logPurchase'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:532: error: undefined reference to 'ui'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:556: error: undefined reference to 'initScreenPosition'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:556: error: undefined reference to 'initScreenPosition'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)


at Unity.IL2CPP.Building.CppProgramBuilder.PostprocessObjectFiles(HashSet`1 objectFiles, CppToolChainContext toolChainContext)
at Unity.IL2CPP.Building.CppProgramBuilder.Build(IBuildStatistics& statistics)
at il2cpp.Program.DoRun(String[] args)
at il2cpp.Program.Run(String[] args)
at il2cpp.Program.Main(String[] args)
stderr:

Unhandled Exception: Unity.IL2CPP.Building.BuilderFailedException: /Applications/Unity/Hub/Editor/2019.1.4f1/PlaybackEngines/AndroidPlayer/NDK/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++ @"/var/folders/q7/p5kl4jk16xq2tb3v_185snp80000gn/T/tmpMqqs3h.tmp" -o "/Users/nathanmeier/Desktop/iFart/Library/il2cpp_android_armeabi-v7a/il2cpp_cache/linkresult_B8D226BE24D5F3FB94DCA8D9D63E59A5/libil2cpp.so" -shared -Wl,-soname,libil2cpp.so -Wl,--no-undefined -Wl,-z,noexecstack -Wl,--gc-sections -Wl,--build-id --sysroot "/Applications/Unity/Hub/Editor/2019.1.4f1/PlaybackEngines/AndroidPlayer/NDK/platforms/android-16/arch-arm" -gcc-toolchain "/Applications/Unity/Hub/Editor/2019.1.4f1/PlaybackEngines/AndroidPlayer/NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64" -target armv7-none-linux-androideabi -Wl,--wrap,sigaction -L "/Applications/Unity/Hub/Editor/2019.1.4f1/PlaybackEngines/AndroidPlayer/NDK/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a" -lgnustl_static -llog -rdynamic -fuse-ld=gold

/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:428: error: undefined reference to 'init'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:460: error: undefined reference to 'logout'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:460: error: undefined reference to 'logout'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:472: error: undefined reference to 'activateApp'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:472: error: undefined reference to 'activateApp'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:500: error: undefined reference to 'logPurchase'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:532: error: undefined reference to 'ui'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:556: error: undefined reference to 'initScreenPosition'
/Users/nathanmeier/Desktop/iFart/Temp/StagingArea/Il2Cpp/il2cppOutput/Facebook.Unity.Canvas.cpp:556: error: undefined reference to 'initScreenPosition'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)


at Unity.IL2CPP.Building.CppProgramBuilder.PostprocessObjectFiles(HashSet`1 objectFiles, CppToolChainContext toolChainContext)
at Unity.IL2CPP.Building.CppProgramBuilder.Build(IBuildStatistics& statistics)
at il2cpp.Program.DoRun(String[] args)
at il2cpp.Program.Run(String[] args)
at il2cpp.Program.Main(String[] args)
at Program.Main(String[] args)

UnityEngine.Debug:LogError(Object)
UnityEditorInternal.Runner:RunProgram(Program, String, String, String, CompilerOutputParserBase) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:128)
UnityEditorInternal.Runner:RunNetCoreProgram(String, String, String, CompilerOutputParserBase, Action`1) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:79)
UnityEditorInternal.IL2CPPBuilder:RunIl2CppWithArguments(List`1, Action`1, String) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:494)
UnityEditorInternal.IL2CPPBuilder:ConvertPlayerDlltoCpp(String, String, String, Boolean) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:477)
UnityEditorInternal.IL2CPPBuilder:Run() (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:334)
UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, String, IIl2CppPlatformProvider, Action`1, RuntimeClassRegistry) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:63)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr)
Exception: /Applications/Unity/Hub/Editor/2019.1.4f1/Unity.app/Contents/il2cpp/build/il2cppcore/il2cppcore.dll did not run properly!
UnityEditorInternal.Runner.RunProgram (UnityEditor.Utils.Program p, System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:130)
UnityEditorInternal.Runner.RunNetCoreProgram (System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser, System.Action`1[T] setupStartInfo) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:79)
UnityEditorInternal.IL2CPPBuilder.RunIl2CppWithArguments (System.Collections.Generic.List`1[T] arguments, System.Action`1[T] setupStartInfo, System.String workingDirectory) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:494)
UnityEditorInternal.IL2CPPBuilder.ConvertPlayerDlltoCpp (System.String inputDirectory, System.String outputDirectory, System.String workingDirectory, System.Boolean platformSupportsManagedDebugging) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:477)
UnityEditorInternal.IL2CPPBuilder.Run () (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:334)
UnityEditorInternal.IL2CPPUtils.RunIl2Cpp (System.String tempFolder, System.String stagingAreaData, UnityEditorInternal.IIl2CppPlatformProvider platformProvider, System.Action`1[T] modifyOutputBeforeCompile, UnityEditor.RuntimeClassRegistry runtimeClassRegistry) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:63)
UnityEditor.Android.PostProcessor.Tasks.RunIl2Cpp.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.Android.PostProcessAndroidPlayer.PostProcess (UnityEditor.BuildTarget target, System.String stagingAreaData, System.String stagingArea, System.String playerPackage, System.String installPath, System.String companyName, System.String productName, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.Android.AndroidBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <563f4bbc342a4b6b88ae70c46cea610c>:0)
UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:281)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr)





Does anybody have any idea what the problem could be or how to fix it?