WebGL build error with MONO_EXECUTABLE

I am having difficulty building from a command line from a build machine for our Unity project in WebGL. I always get the error that the MONO_EXECUTABLE does not exist.
If I copy the path in windows explorer, it will actually find the file.

Would you know what could be causing this error? I joined the relevant build machine log errors.

14-Sep-2021 15:54:09 C:\Program Files\Unity_2020_3_17_f1\Editor\Data\il2cpp\build/deploy/netcoreapp3.1/UnityLinker.exe exited after 11111 ms.
14-Sep-2021 15:54:09
14-Sep-2021 15:54:09 C:\Program Files\Unity_2020_3_17_f1\Editor\Data\Tools/InternalCallRegistrationWriter/InternalCallRegistrationWriter.exe exited after 222 ms.
14-Sep-2021 15:54:09
14-Sep-2021 15:54:09 Invoking il2cpp (via bee.exe) with arguments: --convert-to-cpp --dotnetprofile="unityaot" --compile-cpp --libil2cpp-static --platform="WebGL" --architecture="EmscriptenJavaScript" --configuration="Release" --outputpath="C:\bamboo\xml-data\build-dir\SUPHIP-RIS0-WEBGL\WebGL\Client\Library/Il2cppBuildCache/WebGL\Native\build.bc" --cachedirectory="C:\bamboo\xml-data\build-dir\SUPHIP-RIS0-WEBGL\WebGL\Client\Assets\..\Library/il2cpp_cache" --compiler-flags="-Oz -DIL2CPP_EXCEPTION_DISABLED=1 " --baselib-directory="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\Variations\nondevelopment" --avoid-dynamic-library-copy --emit-method-map --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AccessibilityModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AIModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AndroidJNIModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AnimationModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AssetBundleModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AudioModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_ClothModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_CoreModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_CrashReportingModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_DirectorModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_DSPGraphModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_GameCenterModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_GIModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_GridModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_HotReloadModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_ImageConversionModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_IMGUIModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_InputLegacyModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_InputModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_JSONSerializeModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_LocalizationModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_ParticleSystemModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_PerformanceReportingModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_Physics2DModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_PhysicsModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_ProfilerModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_RuntimeInitializeOnLoadManagerInitializerModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_ScreenCaptureModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_SharedInternalsModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_SpriteMaskModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_SpriteShapeModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_StreamingModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_SubstanceModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_SubsystemsModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TerrainModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TerrainPhysicsModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TextCoreModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TextRenderingModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TilemapModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TLSModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UIElementsModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UIElementsNativeModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UIModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UmbraModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UNETModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityAnalyticsModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityConnectModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityCurlModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityTestProtocolModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestAssetBundleModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestAudioModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestTextureModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestWWWModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_VehiclesModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_VFXModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_VideoModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_VRModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_WebGLModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_WindModule_Dynamic.bc" --additional-libraries="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_XRModule_Dynamic.bc" --additional-cpp=C:/bamboo/xml-data/build-dir/SUPHIP-RIS0-WEBGL/WebGL/Client/Library/Il2cppBuildCache/WebGL/additionalCppFiles/UnityClassRegistration.cpp --additional-cpp=C:/bamboo/xml-data/build-dir/SUPHIP-RIS0-WEBGL/WebGL/Client/Library/Il2cppBuildCache/WebGL/additionalCppFiles/UnityICallRegistration.cpp --profiler-report --map-file-parser="C:/Program Files/Unity_2020_3_17_f1/Editor/Data/Tools/MapFileParser/MapFileParser.exe" --directory=C:/bamboo/xml-data/build-dir/SUPHIP-RIS0-WEBGL/WebGL/Client/Temp/StagingArea/Data/Managed --generatedcppdir=C:/bamboo/xml-data/build-dir/SUPHIP-RIS0-WEBGL/WebGL/Client/Library/Il2cppBuildCache/WebGL/il2cppOutput
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 C:\Program Files\Unity_2020_3_17_f1\Editor\Data\il2cpp/build/BeeSettings/offline/bee.exe exited after 213 ms.
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 Uploading Crash Report
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 Exception: Failed running C:\Program Files\Unity_2020_3_17_f1\Editor\Data\il2cpp/build/BeeSettings/offline/bee.exe --no-colors --prebuiltbuildprogram="C:\Program Files\Unity_2020_3_17_f1\Editor\Data\il2cpp/build/BeeSettings/offline/artifacts/buildprogram/buildprogram.exe"
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 stdout:
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 error: MONO_EXECUTABLE set to "C:\Program Files\Unity_2020_3_17_f1\Editor\Data\MonoBleedingEdge\bin\mono" but that file doesn't exist (System.ArgumentException)
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at Bee.Tools.Paths.FindMonoBleedingEdgeCli
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at Bee.Tools.Paths..cctor
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at Bee.Tools.Paths.get_ProjectRoot
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at Bee.Tools.Errors.Location
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at Bee.Tools.Errors.PrintWarningWithLocation
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at Bee.Core.DynamicLoader+<>c.<GetAllTypesInAssemblies>b__0_2
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at System.Linq.Enumerable+<SelectManyIterator>d__17`2[TSource,TResult].MoveNext
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at System.Linq.Buffer`1[TElement]..ctor
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at System.Linq.OrderedEnumerable`1+<GetEnumerator>d__1[TElement].MoveNext
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at System.Collections.Generic.List`1[T]..ctor
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at System.Linq.Enumerable.ToList
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at Bee.Core.DynamicLoader.FindAndCreateInstanceOfEachInAllAssemblies
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at Bee.StandaloneBeeDriver..cctor
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 stderr:
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at UnityEditorInternal.Runner.RunProgram (UnityEditor.Utils.Program p, System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser) [0x00190] in <d0e4b8c1204147f3935b6e9c8b8565ad>:0
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at UnityEditorInternal.Runner.RunManagedProgram (System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser, System.Action`1[T] setupStartInfo) [0x00060] in <d0e4b8c1204147f3935b6e9c8b8565ad>:0
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at UnityEditorInternal.IL2CPPBuilder.RunIl2CppWithArguments (System.Collections.Generic.List`1[T] arguments, System.Action`1[T] setupStartInfo) [0x00111] in <d0e4b8c1204147f3935b6e9c8b8565ad>:0
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at UnityEditorInternal.IL2CPPBuilder.ConvertPlayerDlltoCpp (UnityEditor.Il2Cpp.Il2CppBuildPipelineData data) [0x0039b] in <d0e4b8c1204147f3935b6e9c8b8565ad>:0
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at UnityEditorInternal.IL2CPPBuilder.Run () [0x000f4] in <d0e4b8c1204147f3935b6e9c8b8565ad>:0
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at UnityEditorInternal.IL2CPPUtils.RunIl2Cpp (System.String stagingAreaData, UnityEditorInternal.IIl2CppPlatformProvider platformProvider, System.Action`1[T] modifyOutputBeforeCompile, UnityEditor.RuntimeClassRegistry runtimeClassRegistry) [0x0001c] in <d0e4b8c1204147f3935b6e9c8b8565ad>:0
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at UnityEditor.WebGL.WebGlBuildPostprocessor.CompileBuild (UnityEditor.Modules.BuildPostProcessArgs args) [0x00108] in /Users/bokken/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:365
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at UnityEditor.WebGL.WebGlBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) [0x002cb] in /Users/bokken/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:913
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) [0x00001] in <d0e4b8c1204147f3935b6e9c8b8565ad>:0
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 at 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) [0x000dc] in <d0e4b8c1204147f3935b6e9c8b8565ad>:0
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 UnityEditor.BuildPipeline:BuildPlayerInternalNoCheck(String[], String, String, BuildTargetGroup, BuildTarget, BuildOptions, String[], Boolean)
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 UnityEditor.BuildPipeline:BuildPlayerInternal(String[], String, String, BuildTargetGroup, BuildTarget, BuildOptions, String[])
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 UnityEditor.BuildPipeline:BuildPlayer(String[], String, String, BuildTargetGroup, BuildTarget, BuildOptions, String[])
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 UnityEditor.BuildPipeline:BuildPlayer(BuildPlayerOptions)
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 UnityEditor.BuildPipeline:BuildPlayer(String[], String, BuildTarget, BuildOptions)
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 BuildAndDeploy.Build:BuildFromManifest(BuildsManifest, BuildManifest) (at Assets\Editor\Build\Build.cs:550)
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 BuildAndDeploy.Build:ExecuteBuildsManifest(BuildsManifest) (at Assets\Editor\Build\Build.cs:354)
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 BuildAndDeploy.Build:ExecuteManifest() (at Assets\Editor\Build\Build.cs:402)
14-Sep-2021 15:54:10
14-Sep-2021 15:54:10 BuildAndDeploy.Build:ExecuteReleaseManifest() (at Assets\Editor\Build\Build.cs:383)

 

Seems like the bamboo agents required a restart. It no longer happens for now.