I got this crash a lot, especially after a displayed ad gets destroyed:
Fatal Exception: java.lang.NullPointerException: Attempt to invoke interface method 'boolean java.util.Map.containsKey(java.lang.Object)' on a null object reference
at com.google.android.gms.ads.internal.formats.v.a(:com.google.android.gms.DynamiteModulesA:357)
at com.google.android.gms.ads.internal.formats.w.run(:com.google.android.gms.DynamiteModulesA:3038)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:211)
at android.app.ActivityThread.main(ActivityThread.java:5373)
at java.lang.reflect.Method.invoke(Method.java)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1020)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:815)
And it's very unfortunate because it crashes the app completely...Now Google promised to fix this but I'm wondering if anyone had the same issue and found a way to circumvent it. At least to prevent a complete crash because my users are not happy with this.