Question il2cpp build failed Please help

Hello,
After i finished my game i tried to build it with Mono for ANDROID and it worked fine, But whenever i try to build it using il2cpp i get lots of errors in the last building step, most of them are complaining about file named "stddef.h" like this one:

Files/Unity/Hub/Editor/2021.3.1f1/Editor/Data/PlaybackEngines/AndroidPlayer/NDK/android-ndk-r21d/toolchains/llvm/prebuilt/windows-x86_64/bin/../sysroot/usr/include\signal.h:33:
C:\Program Files\Unity\Hub\Editor\2021.3.1f1\Editor\Data\PlaybackEngines\AndroidPlayer\NDK\android-ndk-r21d\toolchains\llvm\prebuilt\windows-x86_64\sysroot\usr\include\sys\types.h(32,10): fatal error: 'stddef.h' file not found
#include <stddef.h>
^~~~~~~~~~
1 error generated.
UnityEngine.GUIUtilityrocessEvent (int,intptr,bool&)

BuildFailedException: Incremental Player build failed!
UnityEditor.Modules.BeeBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at <1135c66e5f4c41a7831fa5798849d8b6>:0)
UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <1135c66e5f4c41a7831fa5798849d8b6>:0)
UnityEditor.Android.AndroidBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <cef18509d2a64c60b8ff238a98d49698>:0)
UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.Int32 subtarget, 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 <1135c66e5f4c41a7831fa5798849d8b6>:0)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr, Boolean&)

Build completed with a result of 'Failed' in 238 seconds (237934 ms)
UnityEngine.GUIUtilityrocessEvent (int,intptr,bool&)

UnityEditor.BuildPlayerWindow+BuildMethodException: 256 errors
at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x002da] in <1135c66e5f4c41a7831fa5798849d8b6>:0
at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x00080] in <1135c66e5f4c41a7831fa5798849d8b6>:0
UnityEngine.GUIUtilityrocessEvent (int,intptr,bool&)

UPDATE: I tried to build empty project Same Errors, So i think i'm missing a windows package or something

I have checked this path : C:\Program Files\Unity\Hub\Editor\2021.3.1f1\Editor\Data\PlaybackEngines\AndroidPlayer\NDK\android-ndk-r21d\toolchains\llvm\prebuilt\windows-x86_64\sysroot\usr\include\c++\v1\stddef.h
And the file is 100% there!

 

Please Help!!