ОШИБКА APPOLOVIN com.applovin.mediation.hybridAds.MaxHybridNativeAdActivity.onCreate ⇐ Android

[Гость]

I meet some crashes in my android game. can anyone can fix this? here is the stack flow at top

Fatal Exception: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.drs.star/com.applovin.mediation.hybridAds.MaxHybridNativeAdActivity}: java.lang.IllegalArgumentException: Cannot add a null child view to a ViewGroup at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2951) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6718) at java.lang.reflect.Method.invoke(Method.java) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) it seem like the crash happen when the application want to play a advertise video. can any one help?

the following is my code,it is in my jar plugin, put into the Plugins/Android folder in unity

public static void ShowAd() { if (Instance.rewardedAd != null) { if (Instance.rewardedAd.isReady()) { currentActivity.runOnUiThread(new Runnable() { public void run() { ApplovinHelper.Instance.rewardedAd.showAd(); } }); } else { Log.d("ApplovinHelper", "Rewarded is NotReady"); Toast.makeText(currentActivity, "Rewarded is NotReady,Try again later", 0).show(); } } else { Log.d("ApplovinHelper", "Rewarded ad missing"); } } waht can i do?

i have no idea what to do