Admob and Google Play Service error (213833)

When I import admob and google play service plugins (Google Official) and try to build project for android its give me bellow error. Please I request you to help me to resolve this issue thank you.
Admob : GitHub - googleads/googleads-mobile-unity: Official Unity Plugin for the Google Mobile Ads SDK · GitHub
Google Play Games : GitHub - playgameservices/play-games-plugin-for-unity: Google Play Games plugin for Unity · GitHub

CommandInvokationFailure: Gradle build failed.
C:\Program Files\Java\jdk1.8.0_91\bin\java.exe -classpath “E:\Setups\Unity\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\gradle\lib\gradle-launcher-4.2.1.jar” org.gradle.launcher.GradleMain “-Dorg.gradle.jvmargs=-Xmx2048m” “assembleRelease”

stderr[

FAILURE: Build failed with an exception.

  • What went wrong:
    Execution failed for task ‘:transformDexWithDexForRelease’.

com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.dex.DexException: Multiple dex files define Lcom/google/android/gms/auth/api/Auth$AuthCredentialsOptions$Builder;

  • Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

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

BUILD FAILED in 8s
]
stdout[
:preBuild UP-TO-DATE
:GoogleMobileAdsPlugin:preBuild UP-TO-DATE
:GoogleMobileAdsPlugin:preReleaseBuild UP-TO-DATE
:GoogleMobileAdsPlugin:checkReleaseManifest
:GoogleMobileAdsPlugin:processReleaseManifest
:GooglePlayGamesManifest.plugin:preBuild UP-TO-DATE
:GooglePlayGamesManifest.plugin:preReleaseBuild UP-TO-DATE
:GooglePlayGamesManifest.plugin:checkReleaseManifest
:GooglePlayGamesManifest.plugin:processReleaseManifest
:preReleaseBuild UP-TO-DATE
:GoogleMobileAdsPlugin:compileReleaseAidl
:GooglePlayGamesManifest.plugin:compileReleaseAidl
:compileReleaseAidl UP-TO-DATE
:GoogleMobileAdsPlugin:packageReleaseRenderscript NO-SOURCE
:GooglePlayGamesManifest.plugin:packageReleaseRenderscript NO-SOURCE
:compileReleaseRenderscript UP-TO-DATE
:checkReleaseManifest UP-TO-DATE
:generateReleaseBuildConfig UP-TO-DATE
:prepareLintJar UP-TO-DATE
:generateReleaseResValues UP-TO-DATE
:generateReleaseResources UP-TO-DATE
:GoogleMobileAdsPlugin:compileReleaseRenderscript
:GoogleMobileAdsPlugin:generateReleaseResValues
:GoogleMobileAdsPlugin:generateReleaseResources
:GoogleMobileAdsPlugin:packageReleaseResources
:GooglePlayGamesManifest.plugin:compileReleaseRenderscript
:GooglePlayGamesManifest.plugin:generateReleaseResValues
:GooglePlayGamesManifest.plugin:generateReleaseResources
:GooglePlayGamesManifest.plugin:packageReleaseResources
:mergeReleaseResources UP-TO-DATE
:createReleaseCompatibleScreenManifests UP-TO-DATE
:processReleaseManifest
:splitsDiscoveryTaskRelease UP-TO-DATE
:GoogleMobileAdsPlugin:platformAttrExtractor
:GooglePlayGamesManifest.plugin:platformAttrExtractor
:GoogleMobileAdsPlugin:generateReleaseBuildConfig
:GoogleMobileAdsPlugin:prepareLintJar UP-TO-DATE
:GoogleMobileAdsPlugin:javaPreCompileRelease
:GoogleMobileAdsPlugin:processReleaseJavaRes NO-SOURCE
:GooglePlayGamesManifest.plugin:generateReleaseBuildConfig
:GooglePlayGamesManifest.plugin:prepareLintJar UP-TO-DATE
:GooglePlayGamesManifest.plugin:javaPreCompileRelease
:GooglePlayGamesManifest.plugin:processReleaseJavaRes NO-SOURCE
:compileReleaseNdk NO-SOURCE
:mergeReleaseShaders UP-TO-DATE
:compileReleaseShaders UP-TO-DATE
:generateReleaseAssets UP-TO-DATE
:GoogleMobileAdsPlugin:mergeReleaseShaders
:GoogleMobileAdsPlugin:compileReleaseShaders
:GoogleMobileAdsPlugin:generateReleaseAssets
:GoogleMobileAdsPlugin:mergeReleaseAssets
:GooglePlayGamesManifest.plugin:mergeReleaseShaders
:GoogleMobileAdsPlugin:processReleaseResources
:GoogleMobileAdsPlugin:generateReleaseSources
:GoogleMobileAdsPlugin:compileReleaseJavaWithJavac
:GoogleMobileAdsPlugin:transformClassesAndResourcesWithPrepareIntermediateJarsForRelease
:GooglePlayGamesManifest.plugin:compileReleaseShaders
:GooglePlayGamesManifest.plugin:generateReleaseAssets
:GooglePlayGamesManifest.plugin:mergeReleaseAssets
:mergeReleaseAssets
:mergeReleaseJniLibFolders UP-TO-DATE
:GoogleMobileAdsPlugin:compileReleaseNdk NO-SOURCE
:GoogleMobileAdsPlugin:mergeReleaseJniLibFolders
:GoogleMobileAdsPlugin:transformNativeLibsWithMergeJniLibsForRelease
:GoogleMobileAdsPlugin:transformNativeLibsWithIntermediateJniLibsForRelease
:GooglePlayGamesManifest.plugin:compileReleaseNdk NO-SOURCE
:GooglePlayGamesManifest.plugin:mergeReleaseJniLibFolders
:GooglePlayGamesManifest.plugin:transformNativeLibsWithMergeJniLibsForRelease
:GooglePlayGamesManifest.plugin:transformNativeLibsWithIntermediateJniLibsForRelease
:processReleaseJavaRes NO-SOURCE
:validateSigningRelease
:GoogleMobileAdsPlugin:extractReleaseAnnotations
:GoogleMobileAdsPlugin:mergeReleaseConsumerProguardFiles UP-TO-DATE
:GooglePlayGamesManifest.plugin:processReleaseResources
:processReleaseResources
:generateReleaseSources
:GooglePlayGamesManifest.plugin:generateReleaseSources
:GooglePlayGamesManifest.plugin:compileReleaseJavaWithJavac
:GooglePlayGamesManifest.plugin:transformClassesAndResourcesWithPrepareIntermediateJarsForRelease
:javaPreCompileRelease UP-TO-DATE
:compileReleaseJavaWithJavac UP-TO-DATE
:compileReleaseSources UP-TO-DATE
:lintVitalRelease
:transformClassesWithPreDexForRelease UP-TO-DATE
:transformDexWithDexForRelease FAILED
62 actionable tasks: 43 executed, 19 up-to-date
]
exit code: 1
UnityEditor.Android.Command.WaitForProgramToRun (UnityEditor.Utils.Program p, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidJavaTools.RunJava (System.String args, System.String workingdir, System.Action1 progress, System.String error) UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action1 progress)
Rethrow as GradleInvokationException: Gradle build failed
UnityEditor.Android.GradleWrapper.Run (UnityEditor.Android.AndroidJavaTools javaTools, System.String workingdir, System.String task, System.Action`1 progress)
UnityEditor.Android.PostProcessor.Tasks.BuildGradleProject.Execute (UnityEditor.Android.PostProcessor.PostProcessorContext context)
UnityEditor.Android.PostProcessor.PostProcessRunner.RunAllTasks (UnityEditor.Android.PostProcessor.PostProcessorContext context)
UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()

![alt text]

me too
if you solve it please tell me.