Unknown error Android Build UE 5.1

XRLab · June 12, 2023, 5:56pm

Hi UE Devs

I am just learning UE,and im trying to build my VR Android apk.
When i tried to package the project,an unknown error appear with this lines:

UATHelper: Packaging (Android (ASTC)): ********** BUILD COMMAND STARTED **********
UATHelper: Packaging (Android (ASTC)): Running: C:\Program Files\Epic Games\UE_5.1\Engine\Binaries\ThirdParty\DotNet\6.0.302\windows\dotnet.exe “C:\Program Files\Epic Games\UE_5.1\Engine\Binaries\DotNET\UnrealBuildTool\UnrealBuildTool.dll” VRTEST Android Development -Project=“C:\Users\VideoLab_01\Documents\Unreal Projects\VRTEST\VRTEST.uproject” “C:\Users\VideoLab_01\Documents\Unreal Projects\VRTEST\VRTEST.uproject” -NoUBTMakefiles -remoteini=“C:\Users\VideoLab_01\Documents\Unreal Projects\VRTEST” -skipdeploy -Manifest=“C:\Users\VideoLab_01\Documents\Unreal Projects\VRTEST\Intermediate\Build
\Manifest.xml” -NoHotReload -log=“C:\Users\VideoLab_01\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.1\UBT-VRTEST-Android-Development.txt”
UATHelper: Packaging (Android (ASTC)): Log file: C:\Users\VideoLab_01\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.1\UBT-VRTEST-Android-Development.txt
UATHelper: Packaging (Android (ASTC)): Note: Android toolchain NDK r25b recommended
UATHelper: Packaging (Android (ASTC)): Platform Android is not a valid platform to build. Check that the SDK is installed properly.
UATHelper: Packaging (Android (ASTC)): Took 0,45137849999999996s to run dotnet.exe, ExitCode=6
UATHelper: Packaging (Android (ASTC)): UnrealBuildTool failed. See log for more details. (C:\Users\VideoLab_01\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.1\UBT-VRTEST-Android-Development.txt)
UATHelper: Packaging (Android (ASTC)): AutomationTool executed for 0h 0m 26s
UATHelper: Packaging (Android (ASTC)): AutomationTool exiting with ExitCode=6 (6)
UATHelper: Packaging (Android (ASTC)): BUILD FAILED
PackagingResults: Error: Unknown Error

Does anyone know what could be happening?

EliasWick · June 12, 2023, 8:05pm

Did you check: UBT-VRTEST-Android-Development.txt?
It’s likely that you have installed the Android SDK or are missing APIs or other assets to fully make it work.

Have a look at this guide: Android Quick Start | Unreal Engine 4.27 Documentation

XRLab · June 13, 2023, 12:32pm

Hi,thanks for the reply.
First of all, I forgot to say that we are working with Unreal 5.1.
I have tried different versions of NDK and SDK and no results, the unknown error still remains. Followed Unreal instructions to setup everything.
Here is the latest log

Log started at 06/13/2023 14:23:15 (2023-06-13T12:23:15Z)
Adding event matcher: CompileEventMatcher
Adding event matcher: LinkEventMatcher
Adding event matcher: MicrosoftEventMatcher
Adding event matcher: XoreaxEventMatcher
No config file at C:\Users\VideoLab_01\Documents\Unreal Engine\UnrealBuildTool\BuildConfiguration.xml
Configuration will be read from:
C:\Users\VideoLab_01\AppData\Roaming\Unreal Engine\UnrealBuildTool\BuildConfiguration.xml
Log file: C:\Users\VideoLab_01\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.1\UBT-VRTEST-Android-Development.txt

Registering build platform: UnrealBuildTool.AndroidPlatformFactory

Note: Android toolchain NDK r25b recommended
Registering build platform: Android - buildable: False
Registering build platform: UnrealBuildTool.IOSPlatformFactory
Registering build platform: IOS - buildable: False
Registering build platform: UnrealBuildTool.LinuxPlatformFactory
Registering build platform: Linux - buildable: False
Registering build platform: LinuxArm64 - buildable: False
Registering build platform: UnrealBuildTool.MacPlatformFactory
Registering build platform: UnrealBuildTool.TVOSPlatformFactory
Registering build platform: UnrealBuildTool.WindowsPlatformFactory
Found Windows 10 SDK root at C:\Program Files (x86)\Windows Kits\10 (1)
Found Windows 10 SDK root at C:\Program Files (x86)\Windows Kits\10 (2)
Found Windows 10 SDK version 10.0.22000.0 at C:\Program Files (x86)\Windows Kits\10
Found Universal CRT version 10.0.22000.0 at C:\Program Files (x86)\Windows Kits\10
Win64 Installed SDK(s): MinVersion_Sdk=10.0.00000.0, MaxVersion_Sdk=10.9.99999.0, CurrentVersion_Sdk=10.0.22000.0, Version_AutoSdk=10.0.18362.0, CurrentVersion_AutoSdk=
Registering build platform: Win64 - buildable: True
Registering build platform: UnrealBuildTool.HoloLensPlatformFactory
Command line: “C:\Program Files\Epic Games\UE_5.1\Engine\Binaries\DotNET\UnrealBuildTool\UnrealBuildTool.dll” VRTEST Android Development “-Project=C:\Users\VideoLab_01\Documents\Unreal Projects\VRTEST\VRTEST.uproject” “C:\Users\VideoLab_01\Documents\Unreal Projects\VRTEST\VRTEST.uproject” -NoUBTMakefiles “-remoteini=C:\Users\VideoLab_01\Documents\Unreal Projects\VRTEST” -skipdeploy “-Manifest=C:\Users\VideoLab_01\Documents\Unreal Projects\VRTEST\Intermediate\Build\Manifest.xml” -NoHotReload “-log=C:\Users\VideoLab_01\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.1\UBT-VRTEST-Android-Development.txt”
Note: Android toolchain NDK r25b recommended
Platform Android is not a valid platform to build. Check that the SDK is installed properly.
BuildException: Platform Android is not a valid platform to build. Check that the SDK is installed properly.
at UnrealBuildTool.UEBuildTarget.Create(TargetDescriptor Descriptor, Boolean bSkipRulesCompile, Boolean bForceRulesCompile, Boolean bUsePrecompiled, ILogger Logger) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildTarget.cs:line 699
at UnrealBuildTool.BuildMode.CreateMakefile(BuildConfiguration BuildConfiguration, TargetDescriptor TargetDescriptor, ISourceFileWorkingSet WorkingSet, ILogger Logger) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:line 741
at UnrealBuildTool.BuildMode.Build(List`1 TargetDescriptors, BuildConfiguration BuildConfiguration, ISourceFileWorkingSet WorkingSet, BuildOptions Options, FileReference WriteOutdatedActionsFile, ILogger Logger, Boolean bSkipPreBuildTargets) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:line 275
at UnrealBuildTool.BuildMode.Execute(CommandLineArguments Arguments, ILogger Logger) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\Modes\BuildMode.cs:line 242
at UnrealBuildTool.UnrealBuildTool.Main(String[] ArgumentsArray) in D:\build++UE5\Sync\Engine\Saved\CsTools\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:line 648
WriteFileIfChanged() wrote 0 changed files of 0 requested writes.
Timeline:

[ 0.000]
0.000
[ 0.470]

greg_cai · June 16, 2023, 4:28am

Maybe you should change your NDK version to r25b.

Project Settings->Platforms->Android SDK->SDKConfig->Location of Android NDK

Try to choose the folder where your NDK installed like xxx/Android/Sdk/ndk/25.1.8937393.