Failed running C:\Users\Nope\AppData\Local\Unity\cache\packages\staging-packages.unity.com\com.unity.burst@0.2.4-preview.20\.Runtime\bcl.exe @C:\Users\Nope\AppData\Local\Temp\tmp30757288.tmp

stdout:
An unexpected exception occurred:
System.Exception: Android NDK not found. Make sure environment variable ANDROID_NDK_ROOT is not empty.
   bei Unity.IL2CPP.Building.ToolChains.Android.AndroidNDKUtilities.GetNdkRootDir()
   bei Unity.IL2CPP.Building.ToolChains.Android.AndroidNDKUtilities..ctor(NPath ndkRootPath, Architecture architecture)
   bei Unity.IL2CPP.Building.ToolChains.AndroidToolChain..ctor(Architecture architecture, BuildConfiguration buildConfiguration, Boolean treatWarningsAsErrors, NPath toolchainPath)
   bei Unity.IL2CPP.Building.Platforms.AndroidPlatformSupport.MakeCppToolChain(BuildingOptions buildingOptions)
   bei Burst.Compiler.IL.Aot.AotLinker..ctor(TargetPlatform aotPlatform, TargetCpu targetCpu, List`1 pluginFolders)
   bei Burst.Compiler.IL.Aot.AotCompiler.Link(Module module, AotCompilerOptions compilerOptions)
   bei Burst.Bcl.Program.Main(String[] args)
stderr:

UnityEngine.Debug:LogError(Object)
UnityEditorInternal.Runner:RunProgram(Program, String, String, String, CompilerOutputParserBase) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:128)
UnityEditorInternal.Runner:RunManagedProgram(String, String, String, CompilerOutputParserBase, Action`1) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:73)
UnityEditorInternal.Runner:RunManagedProgram(String, String) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/BuildUtils.cs:45)
Unity.Burst.Editor.BurstAotCompiler:OnPostBuildPlayerScriptDLLs(BuildReport) (at C:/Users/Nope/AppData/Local/Unity/cache/packages/staging-packages.unity.com/com.unity.burst@0.2.4-preview.20/Editor/BurstAotCompiler.cs:189)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)