Caused by java.lang.UnsupportedOperationException
at android.webkit.WebViewFactory.getProvider(WebViewFactory.java:242)
at android.webkit.WebSettings.getDefaultUserAgent(WebSettings.java:1355)
at com.google.android.gms.ads.internal.util.zzs.zzc(com.google.android.gms:play-services-ads@@21.1.0:9)
at com.google.android.gms.internal.ads.zzcer.zzr(com.google.android.gms:play-services-ads@@21.1.0:17)
at com.google.android.gms.internal.ads.zzcnf.zzC(com.google.android.gms:play-services-ads@@21.1.0:9)
at com.google.android.gms.internal.ads.zzcnf.zza(com.google.android.gms:play-services-ads@@21.1.0:1)
at com.google.android.gms.ads.internal.ClientApi.zzg(com.google.android.gms:play-services-ads@@21.1.0:2)
at com.google.android.gms.ads.internal.client.zzao.zzb(com.google.android.gms:play-services-ads-lite@@21.1.0:2)
at com.google.android.gms.ads.internal.client.zzav.zze(com.google.android.gms:play-services-ads-lite@@21.1.0:1)
at com.google.android.gms.ads.internal.client.zzav.zzd(com.google.android.gms:play-services-ads-lite@@21.1.0:9)
at com.google.android.gms.ads.internal.client.zzed.zzy(com.google.android.gms:play-services-ads-lite@@21.1.0:3)
at com.google.android.gms.ads.internal.client.zzed.zzm(com.google.android.gms:play-services-ads-lite@@21.1.0:8)
at com.google.android.gms.ads.MobileAds.initialize(com.google.android.gms:play-services-ads-lite@@21.1.0:3)
at com.appname.appname.MainActivity.onCreate(MainActivity.java:40)
at android.app.Activity.performCreate(Activity.java:7998)
at android.app.Activity.performCreate(Activity.java:7978)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3422)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7651)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
The exception seems to be coming from an automation testing of Google itself after publishing a new app which is not yet listed in play store.