MAX 12.3.1 Crash: java.lang.NoSuchMethodError: No virtual method addNetworkExtrasBundle

[tracer8]

MAX SDK Version
12.3.1

Device/Platform Info
Any device

Current Behavior
Crash with this error when show Collapsible Banner of Google ads, use MAX SDK and Google Mobile Ads together:
java.lang.NoSuchMethodError: No virtual method addNetworkExtrasBundle(Ljava/lang/Class;Landroid/os/Bundle;)Lcom/google/android/gms/ads/AbstractAdRequestBuilder; in class Lcom/google/android/gms/ads/AdRequest$Builder; or its super classes (declaration of 'com.google.android.gms.ads.AdRequest$Builder'

Expected Behavior
On version 12.3.0, Collapsible Banner of Google Ads will show success without any issue.

How to Reproduce
Gradle:

implementation 'com.applovin:applovin-sdk:12.3.1'
implementation 'com.applovin.mediation:google-adapter:+'

I am use MAX and Google ads together, Google Mobile Ads to show Collapsible banner. Before version 12.3.1, everything is good, but after upgrade to 12.3.1, the error cause of crash show up "java.lang.NoSuchMethodError: No virtual method addNetworkExtrasBundle"

You can try to show GMA collapsible with this code try on both version to see the error

MobileAds.initialize(context, new OnInitializationCompleteListener() {
            @Override
            public void onInitializationComplete(InitializationStatus initializationStatus) {
            }
        });


private AdView mAdView;
    public void LoadBanner(Activity activity, ViewGroup container) {
        Log.d("ADMOB", "Try to load banner");
        this.mAdView = new AdView(activity);
        this.mAdView.setAdSize(this.getAdSize(activity, container));
        this.mAdView.setAdUnitId("ca-app-pub-3940256099942544/8388050270"); // test id already
        container.removeAllViews();
        container.setVisibility(View.VISIBLE);
        container.addView(this.mAdView);
        Bundle extras = new Bundle();
        extras.putString("collapsible", "bottom");
        AdRequest adRequest = ((AdRequest.Builder)(new AdRequest.Builder()).addNetworkExtrasBundle(AdMobAdapter.class, extras)).build();
        this.mAdView.loadAd(adRequest);
        this.mAdView.setAdListener(new AdListener() {
            public void onAdClicked() {
            }

            public void onAdClosed() {
            }

            public void onAdFailedToLoad(LoadAdError adError) {
                Log.d("ADMOB", "Banner fail to load: " + adError);
            }

            public void onAdImpression() {
                Log.d("ADMOB", "Banner impression");
            }

            public void onAdLoaded() {
                Log.d("ADMOB", "Banner loaded");
            }

            public void onAdOpened() {
            }
        });
    }

    private AdSize getAdSize(Activity activity, View adContainerView) {
        Display display = activity.getWindowManager().getDefaultDisplay();
        DisplayMetrics outMetrics = new DisplayMetrics();
        display.getMetrics(outMetrics);
        float widthPixels = (float)outMetrics.widthPixels;
        float density = outMetrics.density;
        int adWidth = (int)(widthPixels / density);
        return AdSize.getCurrentOrientationAnchoredAdaptiveBannerAdSize(activity, adWidth);
    }
    ```

[thomasmso]

@tracer8 - This is likely a mismatch of AdMob adapter and SDK version. Could you send a screenshot of the Mediation Debugger so we can check that?