Unityにて広告つきでビルドした際に発生するエラーを解決したい

前提・実現したいこと

UnityにGoogleの指示通り(https://developers.google.com/admob/unity/start?hl=ja)に広告(AdMob)を実装し、再びビルドしようとしたところ、ビルドする際に必ず以下のエラーが発生するようになった。このエラーを解決したい。

発生している問題・エラーメッセージ

ビルドする際にBuild Gradleのローディング時に必ず発生する。

「com.Android.tools.r8.CompliationFailedException:Compliation failed to complete See the Console for details.」

![![イメージ説明](b13eb7735aa44062d52fd8e882f91863.

試したこと

様々なサイトを探して、そのサイトの指示通りにStack TraceやAndroid Manifest.xmlのPackage Nameをいじったりしましたが、Android Studioのためのサイト、英語のサイトが特に多く、明確な答えや解決策は得られず、解決には至りませんでした。もし同じエラーに直面した方、解決策をご存知の方がいらっしゃいましたらこのエラーの解決策を教えていただきたいです。

補足情報（FW/ツールのバージョンなど）

Unity 2019.3.3f1 Personal

一応Console画面のエラーメッセージ全文も載せます。自分は初心者なものでさっぱり内容はわかりませんが、詳しい方の参考になれば幸いです…

CommandInvokationFailure: Gradle build failed. 
C:\Program Files\Java\jdk1.8.0_241\bin\java.exe -classpath "C:\Program Files\Unity\Hub\Editor\2019.3.3f1\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\gradle\lib\gradle-launcher-5.1.1.jar" org.gradle.launcher.GradleMain "-Dorg.gradle.jvmargs=-Xmx4096m" "bundleRelease"

stderr[
D8: Program type already present: com.google.android.gms.internal.measurement.zzdu

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':launcher:transformClassesAndResourcesWithR8ForRelease'.
> com.android.tools.r8.CompilationFailedException: Compilation failed to complete

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 24s
]
stdout[

> Configure project :launcher
WARNING: The option setting 'android.bundle.enableUncompressedNativeLibs=false' is experimental and unsupported.
The current default is 'true'.


> Configure project :unityLibrary
WARNING: The option setting 'android.bundle.enableUncompressedNativeLibs=false' is experimental and unsupported.
The current default is 'true'.


> Configure project :unityLibrary:GoogleMobileAdsPlugin
WARNING: The option setting 'android.bundle.enableUncompressedNativeLibs=false' is experimental and unsupported.
The current default is 'true'.


> Configure project :unityLibrary:unity-android-resources
WARNING: The option setting 'android.bundle.enableUncompressedNativeLibs=false' is experimental and unsupported.
The current default is 'true'.


> Task :launcher:preBuild UP-TO-DATE
> Task :unityLibrary:preBuild UP-TO-DATE
> Task :unityLibrary:GoogleMobileAdsPlugin:preBuild UP-TO-DATE
> Task :unityLibrary:unity-android-resources:preBuild UP-TO-DATE
> Task :launcher:extractProguardFiles UP-TO-DATE
> Task :unityLibrary:unity-android-resources:preReleaseBuild UP-TO-DATE
> Task :unityLibrary:preReleaseBuild UP-TO-DATE
> Task :unityLibrary:checkReleaseManifest UP-TO-DATE
> Task :unityLibrary:GoogleMobileAdsPlugin:preReleaseBuild UP-TO-DATE
> Task :unityLibrary:unity-android-resources:checkReleaseManifest
> Task :unityLibrary:GoogleMobileAdsPlugin:checkReleaseManifest
> Task :launcher:prepareLintJar UP-TO-DATE
> Task :unityLibrary:processReleaseManifest
> Task :unityLibrary:packageReleaseRenderscript NO-SOURCE
> Task :unityLibrary:generateReleaseResValues UP-TO-DATE
> Task :unityLibrary:mergeReleaseShaders UP-TO-DATE
> Task :unityLibrary:compileReleaseShaders UP-TO-DATE
> Task :unityLibrary:generateReleaseAssets UP-TO-DATE
> Task :unityLibrary:unity-android-resources:processReleaseManifest
> Task :unityLibrary:unity-android-resources:packageReleaseRenderscript NO-SOURCE
> Task :unityLibrary:unity-android-resources:compileReleaseRenderscript NO-SOURCE
> Task :unityLibrary:GoogleMobileAdsPlugin:processReleaseManifest
> Task :unityLibrary:GoogleMobileAdsPlugin:packageReleaseRenderscript NO-SOURCE
> Task :unityLibrary:GoogleMobileAdsPlugin:compileReleaseRenderscript NO-SOURCE
> Task :unityLibrary:GoogleMobileAdsPlugin:generateReleaseResValues
> Task :unityLibrary:GoogleMobileAdsPlugin:generateReleaseResources
> Task :unityLibrary:GoogleMobileAdsPlugin:packageReleaseResources
> Task :unityLibrary:GoogleMobileAdsPlugin:mergeReleaseShaders
> Task :unityLibrary:GoogleMobileAdsPlugin:compileReleaseShaders
> Task :unityLibrary:GoogleMobileAdsPlugin:generateReleaseAssets
> Task :unityLibrary:unity-android-resources:generateReleaseResValues
> Task :unityLibrary:unity-android-resources:generateReleaseResources
> Task :unityLibrary:GoogleMobileAdsPlugin:packageReleaseAssets
> Task :unityLibrary:GoogleMobileAdsPlugin:compileReleaseAidl NO-SOURCE
> Task :unityLibrary:unity-android-resources:packageReleaseResources
> Task :unityLibrary:packageReleaseAssets
> Task :unityLibrary:compileReleaseRenderscript NO-SOURCE
> Task :unityLibrary:generateReleaseResources UP-TO-DATE
> Task :unityLibrary:unity-android-resources:mergeReleaseShaders
> Task :unityLibrary:unity-android-resources:compileReleaseShaders
> Task :unityLibrary:unity-android-resources:generateReleaseAssets
> Task :unityLibrary:unity-android-resources:packageReleaseAssets
> Task :unityLibrary:unity-android-resources:compileReleaseAidl NO-SOURCE
> Task :unityLibrary:GoogleMobileAdsPlugin:generateReleaseRFile
> Task :unityLibrary:unity-android-resources:generateReleaseRFile
> Task :unityLibrary:GoogleMobileAdsPlugin:generateReleaseBuildConfig
> Task :unityLibrary:GoogleMobileAdsPlugin:prepareLintJar UP-TO-DATE
> Task :unityLibrary:GoogleMobileAdsPlugin:generateReleaseSources
> Task :unityLibrary:unity-android-resources:generateReleaseBuildConfig
> Task :unityLibrary:unity-android-resources:prepareLintJar UP-TO-DATE
> Task :unityLibrary:unity-android-resources:generateReleaseSources
> Task :unityLibrary:unity-android-resources:javaPreCompileRelease
> Task :unityLibrary:GoogleMobileAdsPlugin:javaPreCompileRelease
> Task :unityLibrary:packageReleaseResources
> Task :unityLibrary:compileReleaseAidl NO-SOURCE
> Task :unityLibrary:generateReleaseBuildConfig UP-TO-DATE
> Task :unityLibrary:unity-android-resources:compileReleaseJavaWithJavac
> Task :unityLibrary:GoogleMobileAdsPlugin:compileReleaseJavaWithJavac
> Task :unityLibrary:unity-android-resources:bundleLibCompileRelease
> Task :unityLibrary:unity-android-resources:processReleaseJavaRes NO-SOURCE
> Task :unityLibrary:unity-android-resources:bundleLibResRelease
> Task :unityLibrary:GoogleMobileAdsPlugin:bundleLibCompileRelease
> Task :unityLibrary:unity-android-resources:bundleLibRuntimeRelease
> Task :unityLibrary:GoogleMobileAdsPlugin:processReleaseJavaRes NO-SOURCE
> Task :unityLibrary:unity-android-resources:mergeReleaseConsumerProguardFiles UP-TO-DATE
> Task :unityLibrary:unity-android-resources:mergeReleaseJniLibFolders
> Task :unityLibrary:generateReleaseRFile UP-TO-DATE
> Task :unityLibrary:prepareLintJar UP-TO-DATE
> Task :unityLibrary:generateReleaseSources UP-TO-DATE
> Task :unityLibrary:GoogleMobileAdsPlugin:bundleLibResRelease
> Task :unityLibrary:GoogleMobileAdsPlugin:bundleLibRuntimeRelease
> Task :unityLibrary:GoogleMobileAdsPlugin:mergeReleaseConsumerProguardFiles UP-TO-DATE
> Task :unityLibrary:GoogleMobileAdsPlugin:mergeReleaseJniLibFolders
> Task :unityLibrary:unity-android-resources:transformNativeLibsWithMergeJniLibsForRelease
> Task :unityLibrary:unity-android-resources:transformNativeLibsWithStripDebugSymbolForRelease
> Task :unityLibrary:unity-android-resources:transformNativeLibsWithIntermediateJniLibsForRelease
> Task :unityLibrary:GoogleMobileAdsPlugin:transformNativeLibsWithMergeJniLibsForRelease
> Task :unityLibrary:javaPreCompileRelease UP-TO-DATE
> Task :unityLibrary:compileReleaseJavaWithJavac UP-TO-DATE
> Task :unityLibrary:bundleLibCompileRelease UP-TO-DATE
> Task :unityLibrary:processReleaseJavaRes NO-SOURCE
> Task :unityLibrary:bundleLibResRelease UP-TO-DATE
> Task :unityLibrary:bundleLibRuntimeRelease UP-TO-DATE
> Task :unityLibrary:mergeReleaseConsumerProguardFiles UP-TO-DATE
> Task :unityLibrary:GoogleMobileAdsPlugin:transformNativeLibsWithStripDebugSymbolForRelease
> Task :unityLibrary:GoogleMobileAdsPlugin:transformNativeLibsWithIntermediateJniLibsForRelease
> Task :unityLibrary:mergeReleaseJniLibFolders UP-TO-DATE
> Task :unityLibrary:transformNativeLibsWithMergeJniLibsForRelease UP-TO-DATE
> Task :launcher:preReleaseBuild
> Task :unityLibrary:transformNativeLibsWithStripDebugSymbolForRelease UP-TO-DATE
> Task :launcher:compileReleaseRenderscript NO-SOURCE
> Task :unityLibrary:transformNativeLibsWithIntermediateJniLibsForRelease UP-TO-DATE
> Task :launcher:generateReleaseResValues UP-TO-DATE
> Task :launcher:generateReleaseResources UP-TO-DATE
> Task :launcher:mergeReleaseResources
> Task :launcher:checkReleaseManifest UP-TO-DATE
> Task :launcher:createReleaseCompatibleScreenManifests
> Task :launcher:mainApkListPersistenceRelease UP-TO-DATE
> Task :launcher:processReleaseManifest
> Task :launcher:bundleReleaseResources
> Task :launcher:mergeReleaseShaders UP-TO-DATE
> Task :launcher:compileReleaseShaders UP-TO-DATE
> Task :launcher:generateReleaseAssets UP-TO-DATE
> Task :launcher:mergeReleaseAssets
> Task :launcher:compileReleaseAidl NO-SOURCE
> Task :launcher:generateReleaseBuildConfig UP-TO-DATE
> Task :launcher:generateReleaseSources UP-TO-DATE
> Task :launcher:javaPreCompileRelease UP-TO-DATE
> Task :launcher:processReleaseResources
> Task :launcher:compileReleaseJavaWithJavac UP-TO-DATE
> Task :launcher:processReleaseJavaRes NO-SOURCE
> Task :launcher:transformResourcesWithMergeJavaResForRelease UP-TO-DATE

> Task :launcher:transformClassesAndResourcesWithR8ForRelease
R8 is the new Android code shrinker. If you experience any issues, please file a bug at
https://issuetracker.google.com, using 'Shrinker (R8)' as component name. You can
disable R8 by updating gradle.properties with 'android.enableR8=false'.
Current version is: 1.4.77 (build b74371231cb896b02f83285efb055b7c00ff64d8 from go/r8bot (luci-r8-ci-archive-0-eqqf)).