You are right, its related to SDK update, not B4A update.
This kind of error is new, first error is dated somewhere on end of September.
It's look like crash inside AdMob.
Fatal Exception: java.lang.NullPointerException: uriString
at android.net.Uri$StringUri.<init>(Uri.java:476)
at android.net.Uri$StringUri.<init>(Unknown Source)
at android.net.Uri.parse(Uri.java:438)
at com.google.android.gms.ads.internal.video.a.a(:com.google.android.gms.policy_ads_fdr_dynamite@[email protected]:20)
at com.google.android.gms.ads.internal.video.gmsg.f.a(:com.google.android.gms.policy_ads_fdr_dynamite@[email protected]:79)
at com.google.android.gms.ads.internal.webview.j.a(:com.google.android.gms.policy_ads_fdr_dynamite@[email protected]:31)
at com.google.android.gms.ads.internal.webview.ac.run(Unknown Source:5)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at com.google.android.gms.ads.internal.util.e.dispatchMessage(:com.google.android.gms.policy_ads_fdr_dynamite@[email protected]:1)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6944)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)
Fatal Exception: java.lang.NullPointerException: uriString
at android.net.Uri$StringUri.<init>(Uri.java:475)
at android.net.Uri$StringUri.<init>(Uri.java:465)
at android.net.Uri.parse(Uri.java:437)
at com.google.android.gms.ads.internal.video.a.a(:com.google.android.gms.dynamite_adsdynamite@[email protected] (040408-213742215):13)
at com.google.android.gms.ads.internal.video.gmsg.f.a(:com.google.android.gms.dynamite_adsdynamite@[email protected] (040408-213742215):148)
at com.google.android.gms.ads.internal.webview.j.a(:com.google.android.gms.dynamite_adsdynamite@[email protected] (040408-213742215):293)
at com.google.android.gms.ads.internal.webview.ac.run(Unknown Source:4)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at com.google.android.gms.ads.internal.util.e.dispatchMessage(:com.google.android.gms.dynamite_adsdynamite@[email protected] (040408-213742215):5)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5469)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)