Program: 53340
Project: 53340
Buggy source:
@Override protected void loadBanner(final Context context,final CustomEventBannerListener customEventBannerListener,final Map<String,Object> localExtras,final Map<String,String> serverExtras){
  if (AppLovinSdk.VERSION_CODE < 710 && !(context instanceof Activity)) {
    log(ERROR,"String_Node_Str");
    customEventBannerListener.onBannerFailed(MoPubErrorCode.ADAPTER_CONFIGURATION_ERROR);
    return;
  }
  log(DEBUG,"String_Node_Str" + localExtras);
  final AppLovinAdSize adSize=appLovinAdSizeFromServerExtras(localExtras);
  if (adSize != null) {
    final AppLovinSdk sdk=AppLovinSdk.getInstance(context);
    sdk.setPluginVersion("String_Node_Str");
    final AppLovinAdView adView=new AppLovinAdView(adSize,context);
    adView.setAdLoadListener(new AppLovinAdLoadListener(){
      @Override public void adReceived(      final AppLovinAd ad){
        log(DEBUG,"String_Node_Str");
        customEventBannerListener.onBannerLoaded(adView);
      }
      @Override public void failedToReceiveAd(      final int errorCode){
        log(ERROR,"String_Node_Str" + errorCode);
        customEventBannerListener.onBannerFailed(toMoPubErrorCode(errorCode));
      }
    }
);
    adView.setAdDisplayListener(new AppLovinAdDisplayListener(){
      @Override public void adDisplayed(      final AppLovinAd ad){
        log(DEBUG,"String_Node_Str");
      }
      @Override public void adHidden(      final AppLovinAd ad){
        log(DEBUG,"String_Node_Str");
      }
    }
);
    adView.setAdClickListener(new AppLovinAdClickListener(){
      @Override public void adClicked(      final AppLovinAd ad){
        log(DEBUG,"String_Node_Str");
        customEventBannerListener.onBannerClicked();
        customEventBannerListener.onLeaveApplication();
      }
    }
);
    adView.loadNextAd();
  }
 else {
    log(ERROR,"String_Node_Str");
    customEventBannerListener.onBannerFailed(MoPubErrorCode.ADAPTER_CONFIGURATION_ERROR);
  }
}

Fixed version (ground truth):
@Override protected void loadBanner(final Context context,final CustomEventBannerListener customEventBannerListener,final Map<String,Object> localExtras,final Map<String,String> serverExtras){
  if (AppLovinSdk.VERSION_CODE < 710 && !(context instanceof Activity)) {
    log(ERROR,"String_Node_Str");
    customEventBannerListener.onBannerFailed(MoPubErrorCode.ADAPTER_CONFIGURATION_ERROR);
    return;
  }
  log(DEBUG,"String_Node_Str" + localExtras);
  final AppLovinAdSize adSize=appLovinAdSizeFromServerExtras(localExtras);
  if (adSize != null) {
    final AppLovinSdk sdk=AppLovinSdk.getInstance(context);
    sdk.setPluginVersion("String_Node_Str");
    final AppLovinAdView adView=createAdView(adSize,context,customEventBannerListener);
    adView.setAdLoadListener(new AppLovinAdLoadListener(){
      @Override public void adReceived(      final AppLovinAd ad){
        log(DEBUG,"String_Node_Str");
        customEventBannerListener.onBannerLoaded(adView);
      }
      @Override public void failedToReceiveAd(      final int errorCode){
        log(ERROR,"String_Node_Str" + errorCode);
        customEventBannerListener.onBannerFailed(toMoPubErrorCode(errorCode));
      }
    }
);
    adView.setAdDisplayListener(new AppLovinAdDisplayListener(){
      @Override public void adDisplayed(      final AppLovinAd ad){
        log(DEBUG,"String_Node_Str");
      }
      @Override public void adHidden(      final AppLovinAd ad){
        log(DEBUG,"String_Node_Str");
      }
    }
);
    adView.setAdClickListener(new AppLovinAdClickListener(){
      @Override public void adClicked(      final AppLovinAd ad){
        log(DEBUG,"String_Node_Str");
        customEventBannerListener.onBannerClicked();
        customEventBannerListener.onLeaveApplication();
      }
    }
);
    adView.loadNextAd();
  }
 else {
    log(ERROR,"String_Node_Str");
    customEventBannerListener.onBannerFailed(MoPubErrorCode.ADAPTER_CONFIGURATION_ERROR);
  }
}