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Hi, I have this log error after following these steps : https://developer.vive.com/resources/viveport/sdk/documentation/english/viveport-sdk/integration-viveport-sdk/unreal-engine-developers/installing-viveport-sdk-unreal-engine/

I am stuck at step 6 and I don’t understand how to correct it.

Log file open, 02/22/21 14:28:36
LogInit: LLM is enabled
LogInit: LLM CsvWriter: off TraceWriter: off
LogInit: Display: Running engine for game: Eyetracking_3D
LogPlatformFile: Not using cached read wrapper
LogTaskGraph: Started task graph with 5 named threads and 14 total threads with 3 sets of task threads.
LogStats: Stats thread started at 0.553632
LogD3D11RHI: Loaded GFSDK_Aftermath_Lib.x64.dll
LogICUInternationalization: ICU TimeZone Detection - Raw Offset: +1:00, Platform Override: ''
LogPluginManager: Mounting plugin MeshPainting
LogPluginManager: Mounting plugin XGEController

[…]

LogPluginManager: Mounting plugin SteamVR
LogPluginManager: Mounting plugin ViveportSDK
LogInit: Warning: Incompatible or missing module: ViveportSDK
Running C:/UE_4.26/Engine/Binaries/DotNET/UnrealBuildTool.exe Development Win64 -Project="C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Eyetracking_3D.uproject" -TargetType=Editor -Progress -NoEngineChanges -NoHotReloadFromIDE
Invalidating makefile for UE4Editor (Definitions.ViveportSDK.h deleted)
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\ViveportSDK.Build.cs: warning: Referenced directory 'C:\UE_4.26\Engine\Source\ViveportSDK\Public' does not exist.
WARNING: Library 'viveport_api64.lib' was not resolvable to a file when used in Module 'ViveportSDK', assuming it is a filename and will search library paths for it. This is slow and dependency checking will not work for it. Please update reference to be fully qualified alternatively use PublicSystemLibraryPaths if you do intended to use this slow path to suppress this warning.
WARNING: Library 'viveport_ext_api.lib' was not resolvable to a file when used in Module 'ViveportSDK', assuming it is a filename and will search library paths for it. This is slow and dependency checking will not work for it. Please update reference to be fully qualified alternatively use PublicSystemLibraryPaths if you do intended to use this slow path to suppress this warning.
@progress push 5%
Parsing headers for UE4Editor
  Running UnrealHeaderTool "C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Eyetracking_3D.uproject" "C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Intermediate\Build\Win64\UE4Editor\Development\UE4Editor.uhtmanifest" -LogCmds="loginit warning, logexit warning, logdatabase error" -Unattended -WarningsAsErrors -abslog="C:\Users\Kim Luu\AppData\Local\UnrealBuildTool\Log_UHT.txt" -installed
Reflection code generated for UE4Editor in 55,4139067 seconds
@progress pop
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportApi.cpp(1): error: Expected ViveportApi.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportApiDemo.cpp(1): error: Expected ViveportApiDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportArcadeSession.cpp(1): error: Expected ViveportArcadeSession.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportArcadeSessionDemo.cpp(1): error: Expected ViveportArcadeSessionDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportDeeplink.cpp(1): error: Expected ViveportDeeplink.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportDeeplinkDemo.cpp(1): error: Expected ViveportDeeplinkDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportDLC.cpp(1): error: Expected ViveportDLC.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportDLCDemo.cpp(1): error: Expected ViveportDLCDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportIAPQueryPurchaseListDemo.cpp(1): error: Expected ViveportIAPQueryPurchaseListDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportIAPSubscriptionDemo.cpp(1): error: Expected ViveportIAPSubscriptionDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportIAPSubscriptionListDemo.cpp(1): error: Expected ViveportIAPSubscriptionListDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportIAPurchase.cpp(1): error: Expected ViveportIAPurchase.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportIAPurchaseDemo.cpp(1): error: Expected ViveportIAPurchaseDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportIAPurchaseUserDataDemo.cpp(1): error: Expected ViveportIAPurchaseUserDataDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportSDK.cpp(1): error: Expected ViveportSDK.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportSubscription.cpp(1): error: Expected ViveportSubscription.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportSubscriptionDemo.cpp(1): error: Expected ViveportSubscriptionDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportToken.cpp(1): error: Expected ViveportToken.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportTokenDemo.cpp(1): error: Expected ViveportTokenDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportUser.cpp(1): error: Expected ViveportUser.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportUserDemo.cpp(1): error: Expected ViveportUserDemo.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportUserStats.cpp(1): error: Expected ViveportUserStats.h to be first header included.
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportUserStatsDemo.cpp(1): error: Expected ViveportUserStatsDemo.h to be first header included.
Building UE4Editor...
Using Visual Studio 2019 14.28.29337 toolchain (C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.28.29333) and Windows 10.0.18362.0 SDK (C:\Program Files (x86)\Windows Kits\10).
Distributing 6 actions to XGE
--------------------Build System Warning---------------------------------------
License is invalid:
    License information is invalid. Please try reloading your license file using the Coordinator Monitor application on the Coordinator machine, or reinstall IncrediBuild.
    This build will run in standalone mode.

-------------------------------------------------------------------------------
--------------------Project: Default-------------------------------------------
Module.ViveportSDK.gen.cpp
Remarque?: inclusion du fichier?:  C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Development\ViveportSDK\Definitions.ViveportSDK.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Intermediate/Build/Win64/UE4Editor/Inc/ViveportSDK/ViveportApi.gen.cpp
Remarque?: inclusion du fichier?:   C:\UE_4.26\Engine\Source\Runtime\CoreUObject\Public\UObject/GeneratedCppIncludes.h
Remarque?: inclusion du fichier?:       C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.28.29333\INCLUDE\xmemory
Remarque?: inclusion du fichier?:        C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.28.29333\INCLUDE\cstdint
Remarque?: inclusion du fichier?:        C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.28.29333\INCLUDE\xutility
Remarque?: inclusion du fichier?:         C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.28.29333\INCLUDE\utility
Remarque?: inclusion du fichier?:      C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.28.29333\INCLUDE\cctype
 
[…]

C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(44): error C2039: 'GameDir' n'est pas membre de 'FPaths'
C:\UE_4.26\Engine\Source\Runtime\Core\Public\Misc/Paths.h(12): note: voir la d?claration de 'FPaths'
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(44): error C3861: 'GameDir'?: identificateur introuvable
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(48): error C3536: 'file_path1'?: ne peut pas ?tre utilis? avant d'avoir ?t? initialis?
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(48): error C2100: indirection non conforme
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(49): error C3536: 'dll_handle1'?: ne peut pas ?tre utilis? avant d'avoir ?t? initialis?
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(49): error C2446: '=='?: pas de conversion de 'nullptr' en 'int'
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(49): note: Un nullptr natif peut uniquement ?tre converti en bool?en ou, ? l'aide de reinterpret_cast, en type int?gral
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(51): error C2039: 'GameDir' n'est pas membre de 'FPaths'
C:\UE_4.26\Engine\Source\Runtime\Core\Public\Misc/Paths.h(12): note: voir la d?claration de 'FPaths'
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(51): error C3861: 'GameDir'?: identificateur introuvable
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(55): error C2100: indirection non conforme
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(59): error C2039: 'GameDir' n'est pas membre de 'FPaths'
C:\UE_4.26\Engine\Source\Runtime\Core\Public\Misc/Paths.h(12): note: voir la d?claration de 'FPaths'
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(59): error C3861: 'GameDir'?: identificateur introuvable
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(63): error C3536: 'file_path2'?: ne peut pas ?tre utilis? avant d'avoir ?t? initialis?
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(63): error C2100: indirection non conforme
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(64): error C3536: 'dll_handle2'?: ne peut pas ?tre utilis? avant d'avoir ?t? initialis?
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(64): error C2446: '=='?: pas de conversion de 'nullptr' en 'int'
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(64): note: Un nullptr natif peut uniquement ?tre converti en bool?en ou, ? l'aide de reinterpret_cast, en type int?gral
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(66): error C2039: 'GameDir' n'est pas membre de 'FPaths'
C:\UE_4.26\Engine\Source\Runtime\Core\Public\Misc/Paths.h(12): note: voir la d?claration de 'FPaths'
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(66): error C3861: 'GameDir'?: identificateur introuvable
C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSDK.h(70): error C2100: indirection non conforme
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportApi.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportType.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportApi.generated.h
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\ThirdParty\Viveport\Includes\viveport_api.h
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\ThirdParty\Viveport\Includes\viveport_ext_api.h
C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportApi.cpp(320): error C2039: 'invalid_argument' n'est pas membre de 'std'
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.28.29333\INCLUDE\string(24): note: voir la d?claration de 'std'
C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportApi.cpp(320): error C3861: 'invalid_argument'?: identificateur introuvable
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportApiDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportApiDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportApiDemo.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportArcadeSession.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportArcadeSession.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportArcadeSessionType.h
Remarque?: inclusion du fichier?:     C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportArcadeSessionType.generated.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportArcadeSession.generated.h
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportArcadeSessionTypeInternal.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportArcadeSessionTypeInternal.generated.h
Remarque?: inclusion du fichier?:   C:\UE_4.26\Engine\Source\Runtime\JsonUtilities\Public\JsonObjectConverter.h
Remarque?: inclusion du fichier?:    C:\UE_4.26\Engine\Source\Runtime\JsonUtilities\Public\JsonObjectWrapper.h
Remarque?: inclusion du fichier?:     C:\UE_4.26\Engine\Intermediate\Build\Win64\UE4Editor\Inc\JsonUtilities\JsonObjectWrapper.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportArcadeSessionDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportArcadeSessionDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportArcadeSessionDemo.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportDeeplink.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportDeeplink.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportDeeplink.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportDeeplinkDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportDeeplinkDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportDeeplinkDemo.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportDLC.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportDLC.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportDLC.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportDLCDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportDLCDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportDLCDemo.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportIAPQueryPurchaseListDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportIAPQueryPurchaseListDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportIAPurchaseType.h
Remarque?: inclusion du fichier?:     C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportIAPurchaseType.generated.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportIAPQueryPurchaseListDemo.generated.h
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportIAPurchase.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportIAPurchase.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportIAPSubscriptionDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportIAPSubscriptionDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportIAPSubscriptionDemo.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportIAPSubscriptionListDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportIAPSubscriptionListDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportIAPSubscriptionListDemo.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportIAPurchase.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Private\ViveportIAPurchaseTypeInternal.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportIAPurchaseTypeInternal.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportIAPurchaseDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportIAPurchaseDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportIAPurchaseDemo.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportIAPurchaseUserDataDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportIAPurchaseUserDataDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportIAPurchaseUserDataDemo.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportSDK.cpp
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportSubscription.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportSubscription.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportSubscription.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportSubscriptionDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportSubscriptionDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportSubscriptionDemo.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportToken.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportToken.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportToken.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportTokenDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportTokenDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportTokenDemo.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportUser.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportUser.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportUser.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportUserDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportUserDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Public\ViveportUserStats.h
Remarque?: inclusion du fichier?:     C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportUserStats.generated.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportUserDemo.generated.h
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportUserStats.cpp
Remarque?: inclusion du fichier?:  C:/Users/Kim Luu/Documents/Unreal Projects/Eyetracking_3D/Plugins/ViveportSDK/Source/ViveportSDK/Private/ViveportUserStatsDemo.cpp
Remarque?: inclusion du fichier?:   C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\Classes\ViveportUserStatsDemo.h
Remarque?: inclusion du fichier?:    C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Intermediate\Build\Win64\UE4Editor\Inc\ViveportSDK\ViveportUserStatsDemo.generated.h

Error executing C:\UE_4.26\Engine\Build\Windows\cl-filter\cl-filter.exe (tool returned code: 2)
Default.rc2 (0:00.84 at +1:27)
---------------------- Done ----------------------

    Rebuild All: 0 succeeded, 1 failed, 0 skipped

1 build system warning(s):
   - License is invalid

LogInit: Warning: Still incompatible or missing module: ViveportSDK
LogCore: Engine exit requested (reason: EngineExit() was called)
LogExit: Preparing to exit.
LogModuleManager: Shutting down and abandoning module DesktopPlatform (48)
LogModuleManager: Shutting down and abandoning module PlatformCryptoOpenSSL (46)
LogModuleManager: Shutting down and abandoning module PlatformCryptoTypes (44)
LogModuleManager: Shutting down and abandoning module PlatformCrypto (42)
LogModuleManager: Shutting down and abandoning module XGEController (40)
LogModuleManager: Shutting down and abandoning module AnimationModifiers (38)
LogModuleManager: Shutting down and abandoning module AudioEditor (36)
LogModuleManager: Shutting down and abandoning module PropertyEditor (35)
LogModuleManager: Shutting down and abandoning module TextureCompressor (32)
LogModuleManager: Shutting down and abandoning module RenderCore (30)
LogModuleManager: Shutting down and abandoning module Landscape (28)
LogModuleManager: Shutting down and abandoning module SlateRHIRenderer (26)
LogModuleManager: Shutting down and abandoning module OpenGLDrv (24)
LogModuleManager: Shutting down and abandoning module D3D11RHI (22)
LogModuleManager: Shutting down and abandoning module AnimGraphRuntime (20)
LogModuleManager: Shutting down and abandoning module Renderer (18)
LogModuleManager: Shutting down and abandoning module Engine (16)
LogModuleManager: Shutting down and abandoning module CoreUObject (14)
LogModuleManager: Shutting down and abandoning module NetworkFile (12)
LogModuleManager: Shutting down and abandoning module CookedIterativeFile (10)
LogModuleManager: Shutting down and abandoning module StreamingFile (8)
LogModuleManager: Shutting down and abandoning module SandboxFile (6)
LogModuleManager: Shutting down and abandoning module PakFile (4)
LogModuleManager: Shutting down and abandoning module RSA (3)
LogExit: Exiting.
Log file closed, 02/22/21 14:31:16

Can someone please help me ? Thank you

Well I have never used VivePort but this sounds like the main cause

C:\Users\Kim Luu\Documents\Unreal Projects\Eyetracking_3D\Plugins\ViveportSDK\Source\ViveportSDK\ViveportSDK.Build.cs: warning: Referenced directory 'C:\UE_4.26\Engine\Source\ViveportSDK\Public' does not exist.