icl2pp not building correctly for android.,IL2cpp not building correctly for android. Mono worked.

Here are the errors

Failed running C:\Program Files\Unity\Hub\Editor\2019.2.15f1\Editor\Data\il2cpp/build/il2cpp.exe --convert-to-cpp --emit-null-checks --enable-array-bounds-check --dotnetprofile=“unityaot” --compile-cpp --libil2cpp-static --platform=“Android” --architecture=“ARM64” --configuration=“Release” --outputpath=“C:\Users\grego\Week 126 Jam\Temp\StagingArea\assets\bin\Data\Native\arm64-v8a\libil2cpp.so” --cachedirectory=“C:\Users\grego\Week 126 Jam\Assets..\Library\il2cpp_android_arm64-v8a/il2cpp_cache” --additional-include-directories=“C:/Program Files/Unity/Hub/Editor/2019.2.15f1/Editor/Data/PlaybackEngines/AndroidPlayer/Tools\bdwgc/include” --additional-include-directories=“C:/Program Files/Unity/Hub/Editor/2019.2.15f1/Editor/Data/PlaybackEngines/AndroidPlayer/Tools\libil2cpp/include” --tool-chain-path=“C:/Program Files/Unity/Hub/Editor/2019.2.15f1/Editor/Data/PlaybackEngines/AndroidPlayer/NDK” --profiler-report --map-file-parser=“C:/Program Files/Unity/Hub/Editor/2019.2.15f1/Editor/Data/Tools/MapFileParser/MapFileParser.exe” --directory=“C:/Users/grego/Week 126 Jam/Temp/StagingArea/assets/bin/Data/Managed” --generatedcppdir=“C:/Users/grego/Week 126 Jam/Temp/StagingArea/Il2Cpp/il2cppOutput”

stdout:
Building libil2cpp.so with AndroidToolChain
Output directory: C:\Users\grego\Week 126 Jam\Temp\StagingArea\assets\bin\Data\Native\arm64-v8a
Cache directory: C:\Users\grego\Week 126 Jam\Library\il2cpp_android_arm64-v8a\il2cpp_cache
il2cpp.exe didn’t catch exception: System.AggregateException: One or more errors occurred. —> System.ComponentModel.Win32Exception: The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_02.b__0(Object o) --- End of inner exception stack trace --- at Unity.IL2CPP.Building.ParallelFor.RunWithResult[D,T](D[] data, Func2 action)
at Unity.IL2CPP.Building.CppProgramBuilder.BuildAllCppFiles(IEnumerable1 sourceFilesToCompile, IBuildStatisticsCollector statisticsCollector) 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) ---> (Inner Exception #0) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform. at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo) at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller) at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data) at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_02.b__0(Object o)<—

—> (Inner Exception #1) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.b__0(Object o)<—

—> (Inner Exception #2) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.b__0(Object o)<—

—> (Inner Exception #3) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.b__0(Object o)<—

—> (Inner Exception #4) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.b__0(Object o)<—

—> (Inner Exception #5) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.b__0(Object o)<—

stderr:

Unhandled Exception: System.AggregateException: One or more errors occurred. —> System.ComponentModel.Win32Exception: The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_02.b__0(Object o) --- End of inner exception stack trace --- at Unity.IL2CPP.Building.ParallelFor.RunWithResult[D,T](D[] data, Func2 action)
at Unity.IL2CPP.Building.CppProgramBuilder.BuildAllCppFiles(IEnumerable`1 sourceFilesToCompile, IBuildStatisticsCollector statisticsCollector)
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)

UnityEngine.Debug:LogError(Object)
UnityEditorInternal.Runner:RunProgram(Program, String, String, String, CompilerOutputParserBase) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:126)
UnityEditorInternal.Runner:RunManagedProgram(String, String, String, CompilerOutputParserBase, Action1) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:71) UnityEditorInternal.IL2CPPBuilder:RunIl2CppWithArguments(List1, Action1, String) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:503) UnityEditorInternal.IL2CPPBuilder:ConvertPlayerDlltoCpp(String, String, String, Boolean) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:484) UnityEditorInternal.IL2CPPBuilder:Run() (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:334) UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, String, IIl2CppPlatformProvider, Action1, RuntimeClassRegistry) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:63)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

Exception: C:\Program Files\Unity\Hub\Editor\2019.2.15f1\Editor\Data\il2cpp/build/il2cpp.exe 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 C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:128)
UnityEditorInternal.Runner.RunManagedProgram (System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser, System.Action1[T] setupStartInfo) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:71) UnityEditorInternal.IL2CPPBuilder.RunIl2CppWithArguments (System.Collections.Generic.List1[T] arguments, System.Action1[T] setupStartInfo, System.String workingDirectory) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:503) UnityEditorInternal.IL2CPPBuilder.ConvertPlayerDlltoCpp (System.String inputDirectory, System.String outputDirectory, System.String workingDirectory, System.Boolean platformSupportsManagedDebugging) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:484) UnityEditorInternal.IL2CPPBuilder.Run () (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:334) UnityEditorInternal.IL2CPPUtils.RunIl2Cpp (System.String tempFolder, System.String stagingAreaData, UnityEditorInternal.IIl2CppPlatformProvider platformProvider, System.Action1[T] modifyOutputBeforeCompile, UnityEditor.RuntimeClassRegistry runtimeClassRegistry) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:63)
UnityEditor.Android.PostProcessor.Tasks.RunIl2Cpp.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <21da158cd428404389e0b5a08ba9ea0a>:0)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <21da158cd428404389e0b5a08ba9ea0a>: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 <21da158cd428404389e0b5a08ba9ea0a>:0)
UnityEditor.Android.AndroidBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <21da158cd428404389e0b5a08ba9ea0a>: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 C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:281)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

Build completed with a result of ‘Failed’
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

UnityEditor.BuildPlayerWindow+BuildMethodException: 3 errors
at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x00242] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:190
at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x0007f] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:95
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

All help would be appreciated. Thank you.,Here is the errors:
Exception: C:\Program Files\Unity\Hub\Editor\2019.2.15f1\Editor\Data\il2cpp/build/il2cpp.exe 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 C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:128)
UnityEditorInternal.Runner.RunManagedProgram (System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser, System.Action1[T] setupStartInfo) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:71) UnityEditorInternal.IL2CPPBuilder.RunIl2CppWithArguments (System.Collections.Generic.List1[T] arguments, System.Action1[T] setupStartInfo, System.String workingDirectory) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:503) UnityEditorInternal.IL2CPPBuilder.ConvertPlayerDlltoCpp (System.String inputDirectory, System.String outputDirectory, System.String workingDirectory, System.Boolean platformSupportsManagedDebugging) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:484) UnityEditorInternal.IL2CPPBuilder.Run () (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:334) UnityEditorInternal.IL2CPPUtils.RunIl2Cpp (System.String tempFolder, System.String stagingAreaData, UnityEditorInternal.IIl2CppPlatformProvider platformProvider, System.Action1[T] modifyOutputBeforeCompile, UnityEditor.RuntimeClassRegistry runtimeClassRegistry) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:63)
UnityEditor.Android.PostProcessor.Tasks.RunIl2Cpp.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <21da158cd428404389e0b5a08ba9ea0a>:0)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context) (at <21da158cd428404389e0b5a08ba9ea0a>: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 <21da158cd428404389e0b5a08ba9ea0a>:0)
UnityEditor.Android.AndroidBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <21da158cd428404389e0b5a08ba9ea0a>: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 C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:281)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

Failed running C:\Program Files\Unity\Hub\Editor\2019.2.15f1\Editor\Data\il2cpp/build/il2cpp.exe --convert-to-cpp --emit-null-checks --enable-array-bounds-check --dotnetprofile=“unityaot” --compile-cpp --libil2cpp-static --platform=“Android” --architecture=“ARM64” --configuration=“Release” --outputpath=“C:\Users\grego\Week 126 Jam\Temp\StagingArea\assets\bin\Data\Native\arm64-v8a\libil2cpp.so” --cachedirectory=“C:\Users\grego\Week 126 Jam\Assets..\Library\il2cpp_android_arm64-v8a/il2cpp_cache” --additional-include-directories=“C:/Program Files/Unity/Hub/Editor/2019.2.15f1/Editor/Data/PlaybackEngines/AndroidPlayer/Tools\bdwgc/include” --additional-include-directories=“C:/Program Files/Unity/Hub/Editor/2019.2.15f1/Editor/Data/PlaybackEngines/AndroidPlayer/Tools\libil2cpp/include” --tool-chain-path=“C:/Program Files/Unity/Hub/Editor/2019.2.15f1/Editor/Data/PlaybackEngines/AndroidPlayer/NDK” --profiler-report --map-file-parser=“C:/Program Files/Unity/Hub/Editor/2019.2.15f1/Editor/Data/Tools/MapFileParser/MapFileParser.exe” --directory=“C:/Users/grego/Week 126 Jam/Temp/StagingArea/assets/bin/Data/Managed” --generatedcppdir=“C:/Users/grego/Week 126 Jam/Temp/StagingArea/Il2Cpp/il2cppOutput”

stdout:
Building libil2cpp.so with AndroidToolChain
Output directory: C:\Users\grego\Week 126 Jam\Temp\StagingArea\assets\bin\Data\Native\arm64-v8a
Cache directory: C:\Users\grego\Week 126 Jam\Library\il2cpp_android_arm64-v8a\il2cpp_cache
il2cpp.exe didn’t catch exception: System.AggregateException: One or more errors occurred. —> System.ComponentModel.Win32Exception: The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_02.b__0(Object o) --- End of inner exception stack trace --- at Unity.IL2CPP.Building.ParallelFor.RunWithResult[D,T](D[] data, Func2 action)
at Unity.IL2CPP.Building.CppProgramBuilder.BuildAllCppFiles(IEnumerable1 sourceFilesToCompile, IBuildStatisticsCollector statisticsCollector) 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) ---> (Inner Exception #0) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform. at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo) at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller) at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data) at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_02.b__0(Object o)<—

—> (Inner Exception #1) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.b__0(Object o)<—

—> (Inner Exception #2) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.b__0(Object o)<—

—> (Inner Exception #3) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.b__0(Object o)<—

—> (Inner Exception #4) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.b__0(Object o)<—

—> (Inner Exception #5) System.ComponentModel.Win32Exception (0x80004005): The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_0`2.b__0(Object o)<—

stderr:

Unhandled Exception: System.AggregateException: One or more errors occurred. —> System.ComponentModel.Win32Exception: The specified executable is not a valid application for this OS platform.
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at Unity.IL2CPP.Shell.Execute(ExecuteArgs executeArgs, IExecuteController controller)
at Unity.IL2CPP.Building.CppProgramBuilder.ProvideObjectFile(IntermediateObjectFileCompilationData data)
at Unity.IL2CPP.Building.ParallelFor.<>c__DisplayClass1_02.b__0(Object o) --- End of inner exception stack trace --- at Unity.IL2CPP.Building.ParallelFor.RunWithResult[D,T](D[] data, Func2 action)
at Unity.IL2CPP.Building.CppProgramBuilder.BuildAllCppFiles(IEnumerable`1 sourceFilesToCompile, IBuildStatisticsCollector statisticsCollector)
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)

UnityEngine.Debug:LogError(Object)
UnityEditorInternal.Runner:RunProgram(Program, String, String, String, CompilerOutputParserBase) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:126)
UnityEditorInternal.Runner:RunManagedProgram(String, String, String, CompilerOutputParserBase, Action1) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:71) UnityEditorInternal.IL2CPPBuilder:RunIl2CppWithArguments(List1, Action1, String) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:503) UnityEditorInternal.IL2CPPBuilder:ConvertPlayerDlltoCpp(String, String, String, Boolean) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:484) UnityEditorInternal.IL2CPPBuilder:Run() (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:334) UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, String, IIl2CppPlatformProvider, Action1, RuntimeClassRegistry) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:63)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

Build completed with a result of ‘Failed’
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

UnityEditor.BuildPlayerWindow+BuildMethodException: 3 errors
at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x00242] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:190
at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x0007f] in C:\buildslave\unity\build\Editor\Mono\BuildPlayerWindowBuildMethods.cs:95
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

Any help would be greatly appreciated. Thank you.

The relevant error message here is:

The specified executable is not a valid application for this OS platform

I believe the cause of this issue is some problem with the Android NDK installation. It seems that you might have the Android NDK installed for the wrong platform or architecture. Maybe try to re-install the Android NDK. See details here: Unity - Manual: Android environment setup