Android Build Error with UE5.4.2

International
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Hello, Unreal world!
I am trying to publish a sample app (the third-person template as default, because I was not able to make it with my original app…) but encountering fails.
I followed all the Manuals about Android development by UE website. And my environmental variables are:

ANDROID_HOME
C:\Users'username’\AppData\Local\Android\Sdk
JAVA_HOME
C:\Program Files\Android\Android Studio\jbr
NDK_ROOT and NDKROOT
C:\Users'username’\AppData\Local\Android\Sdk\ndk\25.1.8937393

I believe these are all set correctly.
So far I once uninstalled Android Studio and cleaned up all the studio-related files and folders, clean installed it via UE5.4 editor (so, my Android Studio is Flamingo | 2022.2.1 Patch 2).
Every time I try to run Android emulator connecting my device (both Android 14 and 12) I get the same error message as below.

LogPlayLevel: UAT: ???12?
LogPlayLevel: UAT:
LogPlayLevel: UAT: > Task :app:compileDebugJavaWithJavac FAILED
LogPlayLevel: UAT:
LogPlayLevel: UAT: FAILURE: Build failed with an exception.
LogPlayLevel: UAT:
LogPlayLevel: UAT: * What went wrong:
LogPlayLevel: UAT: Execution failed for task ‘:app:compileDebugJavaWithJavac’.
LogPlayLevel: UAT: > Compilation failed; see the compiler error output for details.
LogPlayLevel: UAT:
LogPlayLevel: UAT: * Try:
LogPlayLevel: UAT: > Run with --stacktrace option to get the stack trace.
LogPlayLevel: UAT: > Run with --info or --debug option to get more log output.
LogPlayLevel: UAT: > Run with --scan to get full insights.
LogPlayLevel: UAT:
LogPlayLevel: UAT: * Get more help at https://help.gradle.org
LogPlayLevel: UAT:
LogPlayLevel: UAT: BUILD FAILED in 37s
LogPlayLevel: UAT: 61 actionable tasks: 60 executed, 1 up-to-date
LogPlayLevel: UAT: cmd.exe failed with args /c “C:\Users'username’\Documents\Unreal Projects\ALStest\Intermediate\Android\arm64\gradle\rungradle.bat” :app:assembleDebug
LogPlayLevel: UAT: (see C:\Users'username’\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.4\Log.txt for full exception trace)
LogPlayLevel: UAT: AutomationTool executed for 0h 1m 6s
LogPlayLevel: UAT: AutomationTool exiting with ExitCode=1 (Error_Unknown)
LogPlayLevel: Completed Launch On Stage: Deploy Task, Time: 43.357787
LogPlayLevel: UAT: BUILD FAILED
PackagingResults: Error: 起動に失敗しました！ Unknown Error

Would you give me any ideas to solve this?
Thank you so much!

*Dev machine: Windows 11 Pro

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I finally managed to run that with a real device! (Android12).
My apology, I should have added the earlier lines of the error code, which I can’t find right now… But there were many lines which wrote ??? about UTF-8 issues.
I asked to ChatGPT and finally did:
-Change Windows’ Admin Locale “Use UTF-8 of worldwide lang support” to be checked

scshot
scshot1319×1490 94 KB

-Also, opened SDK manager of Android Studio and uncheck SDK35, because I observed the newest version tends to make error sometimes.
It took whole 2 days to solve this… Hope this information helps you in the near future.
Thanks,

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One more thing. Because GPT sensei insisted, I added “PYTHONIOENCODING : UTF-8” to my system variables (Windows’ system). But I am not quite sure this really do something… Just FYI.

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