I wanted to try the HelloARUnreal in Arcore 1.2 but i have an Error when launching to Android Device(Samsung S7).
I did follow this Guide
-google-ar-unreal from github
-run setup.bat
-generate project files.bat
-Build UE4 Development for Win64
-create new blank project
All theses steps are OK and gives no error but when launching on device i get:
UATHelper: Packaging (Android (ETC2)): Running AutomationTool...
UATHelper: Packaging (Android (ETC2)): Parsing command line: -ScriptsForProject=C:/Users/i8306/Downloads/arcore-unreal-sdk-master/HelloARUnreal/HelloARUnreal.uproject BuildCookRun -nocompileeditor -nop4 -project=C:/Users/i8306/Downloads/arcore-unreal-sdk-master/HelloARUnreal/HelloARUnreal.uproject -cook -stage -archive -archivedirectory=C:/Users/i8306/Downlo
ads/arcore-unreal-sdk-master/HelloARUnreal -package -clientconfig=Development -ue4exe=UE4Editor-Cmd.exe -pak -prereqs -nodebuginfo -targetplatform=Android -cookflavor=ETC2 -build -utf8output -compile
UATHelper: Packaging (Android (ETC2)): Compiling scripts.
UATHelper: Packaging (Android (ETC2)): DotNETUtilities -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\DotNETUtilities.dll
UATHelper: Packaging (Android (ETC2)): UnrealBuildTool -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\UnrealBuildTool.exe
UATHelper: Packaging (Android (ETC2)): AutomationUtils.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationUtils.Automation.dll
UATHelper: Packaging (Android (ETC2)): AllDesktop.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\AllDesktop\AllDesktop.Automation.dll
UATHelper: Packaging (Android (ETC2)): Localization.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\Localization.Automation.dll
UATHelper: Packaging (Android (ETC2)): OneSkyLocalization.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\OneSkyLocalization.Automation.dll
UATHelper: Packaging (Android (ETC2)): AutomationScripts.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\AutomationScripts.Automation.dll
UATHelper: Packaging (Android (ETC2)): Android.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\Android\Android.Automation.dll
UATHelper: Packaging (Android (ETC2)): BuildGraph.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\BuildGraph.Automation.dll
UATHelper: Packaging (Android (ETC2)): HTML5.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\HTML5\HTML5.Automation.dll
UATHelper: Packaging (Android (ETC2)): MobileDeviceInterface -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\IOS\MobileDeviceInterface.dll
UATHelper: Packaging (Android (ETC2)): IOS.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\IOS\IOS.Automation.dll
UATHelper: Packaging (Android (ETC2)): Linux.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\Linux\Linux.Automation.dll
UATHelper: Packaging (Android (ETC2)): Mac.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\Mac\Mac.Automation.dll
UATHelper: Packaging (Android (ETC2)): TVOS.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\TVOS\TVOS.Automation.dll
UATHelper: Packaging (Android (ETC2)): Win.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\Win.Automation.dll
UATHelper: Packaging (Android (ETC2)): XLocLocalization.Automation -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\AutomationScripts\XLocLocalization.Automation.dll
UATHelper: Packaging (Android (ETC2)): Took 2.9050001s to run MSBuild.exe, ExitCode=0
UATHelper: Packaging (Android (ETC2)): Setting up ProjectParams for C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal\HelloARUnreal.uproject
UATHelper: Packaging (Android (ETC2)): ********** BUILD COMMAND STARTED **********
UATHelper: Packaging (Android (ETC2)): Running: C:\Program Files (x86)\MSBuild\14.0\bin\MSBuild.exe D:/UnrealEngine-4.19-arcore/Engine/Source/Programs/UnrealBuildTool/UnrealBuildTool.csproj /verbosity:minimal /nologo /property:Configuration=Development /property:Platform=AnyCPU
UATHelper: Packaging (Android (ETC2)): DotNETUtilities -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\DotNETUtilities.dll
UATHelper: Packaging (Android (ETC2)): UnrealBuildTool -> D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\UnrealBuildTool.exe
UATHelper: Packaging (Android (ETC2)): Took 0.2389997s to run MSBuild.exe, ExitCode=0
UATHelper: Packaging (Android (ETC2)): Running: D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\UnrealBuildTool.exe HelloARUnreal Android Development -Project=C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal\HelloARUnreal.uproject C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal\HelloARUnreal.uproject -NoUBTMakefiles -remot
eini="C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal" -skipdeploy -noxge -generatemanifest -NoHotReload
UATHelper: Packaging (Android (ETC2)): PLATFORM_ANDROID_NDK_VERSION = 120200
UATHelper: Packaging (Android (ETC2)): NDK toolchain: r12b, NDK version: 19, GccVersion: 4.9, ClangVersion: 3.8.256229
UATHelper: Packaging (Android (ETC2)): Took 1.8545015s to run UnrealBuildTool.exe, ExitCode=0
UATHelper: Packaging (Android (ETC2)): Running: D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\UnrealBuildTool.exe HelloARUnreal Android Development -Project=C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal\HelloARUnreal.uproject C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal\HelloARUnreal.uproject -NoUBTMakefiles -remot
eini="C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal" -skipdeploy -noxge -NoHotReload -ignorejunk
UATHelper: Packaging (Android (ETC2)): PLATFORM_ANDROID_NDK_VERSION = 120200
UATHelper: Packaging (Android (ETC2)): NDK toolchain: r12b, NDK version: 19, GccVersion: 4.9, ClangVersion: 3.8.256229
UATHelper: Packaging (Android (ETC2)): Compiling Native code with NDK API 'android-19'
UATHelper: Packaging (Android (ETC2)): Performing 3 actions (4 in parallel)
UATHelper: Packaging (Android (ETC2)): [1/3] clang++.exe Module.GoogleARCoreBase.cpp [arm64-es2]
UATHelper: Packaging (Android (ETC2)): In file included from D:/UnrealEngine-4.19-arcore/Engine/Plugins/Runtime/GoogleARCore/Intermediate/Build/Android/HelloARUnreal/Development/GoogleARCoreBase/Module.GoogleARCoreBase.cpp:3:
UATHelper: Packaging (Android (ETC2)): D:\UnrealEngine-4.19-arcore\Engine\Plugins\Runtime\GoogleARCore\Source\GoogleARCoreBase\Private\GoogleARCoreAPI.cpp(14,10) : fatal error: 'media/NdkImage.h' file not found
PackagingResults: Error: 'media/NdkImage.h' file not found
UATHelper: Packaging (Android (ETC2)): #include "media/NdkImage.h"
UATHelper: Packaging (Android (ETC2)): ^
UATHelper: Packaging (Android (ETC2)): 1 error generated.
UATHelper: Packaging (Android (ETC2)): ERROR: UBT ERROR: Failed to produce item: D:\UnrealEngine-4.19-arcore\Engine\Plugins\Runtime\GoogleARCore\Binaries\Android\HelloARUnreal-GoogleARCoreBase-arm64-es2.a
PackagingResults: Error: UBT ERROR: Failed to produce item: D:\UnrealEngine-4.19-arcore\Engine\Plugins\Runtime\GoogleARCore\Binaries\Android\HelloARUnreal-GoogleARCoreBase-arm64-es2.a
UATHelper: Packaging (Android (ETC2)): Total build time: 10.08 seconds (Local executor: 0.00 seconds)
UATHelper: Packaging (Android (ETC2)): Took 10.2140409s to run UnrealBuildTool.exe, ExitCode=5
UATHelper: Packaging (Android (ETC2)): ERROR: Command failed (Result:5): D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\UnrealBuildTool.exe HelloARUnreal Android Development -Project=C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal\HelloARUnreal.uproject C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal\HelloARUnreal.uprojec
t -NoUBTMakefiles -remoteini="C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal" -skipdeploy -noxge -NoHotReload -ignorejunk. See logfile for details: 'UnrealBuildTool-2018.05.22-15.24.51.txt'
UATHelper: Packaging (Android (ETC2)): (see D:\UnrealEngine-4.19-arcore\Engine\Programs\AutomationTool\Saved\Logs\UAT_Log.txt for full exception trace)
PackagingResults: Error: Command failed (Result:5): D:\UnrealEngine-4.19-arcore\Engine\Binaries\DotNET\UnrealBuildTool.exe HelloARUnreal Android Development -Project=C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal\HelloARUnreal.uproject C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal\HelloARUnreal.uproject -NoUBTMakefiles -r
emoteini="C:\Users\i8306\Downloads\arcore-unreal-sdk-master\HelloARUnreal" -skipdeploy -noxge -NoHotReload -ignorejunk. See logfile for details: 'UnrealBuildTool-2018.05.22-15.24.51.txt'
UATHelper: Packaging (Android (ETC2)): AutomationTool exiting with ExitCode=5 (5)
UATHelper: Packaging (Android (ETC2)): BUILD FAILED
PackagingResults: Error: Unknown Error
Help would be welcome 
Thanks!