Android AdMob - NoSuchMethodError: No static method zzand()
<p>I'm getting crashes when trying to use the Firebase Admob Ads. I've followed the guide but I'm still getting this odd error:</p>

<pre><code>java.lang.NoSuchMethodError: No static method zzand()Lcom/google/android/gms/common/zzc; in class Lcom/google/android/gms/common/zzc; or its super classes (declaration of 'com.google.android.gms.common.zzc' appears in /data/data/tech.timmo.terminalwatch/files/instant-run/dex/slice-com.google.android.gms-play-services-basement-9.4.0_0d08c875bcfdb7f644dc6c5ac5fbcb017cb05b7c-classes.dex)
                                                                      at com.google.android.gms.ads.internal.util.client.zza.zzar(Unknown Source)
                                                                      at com.google.android.gms.ads.internal.client.zzl.zza(Unknown Source)
                                                                      at com.google.android.gms.ads.internal.client.zzl.zzl(Unknown Source)
                                                                      at com.google.android.gms.ads.internal.client.zzag.zza(Unknown Source)
                                                                      at com.google.android.gms.ads.MobileAds.initialize(Unknown Source)
                                                                      at com.google.android.gms.ads.MobileAds.initialize(Unknown Source)
                                                                      at tech.timmo.terminalwatch.ConfigActivity$override.onCreate(ConfigActivity.java:77)
                                                                      at tech.timmo.terminalwatch.ConfigActivity$override.access$dispatch(ConfigActivity.java)
                                                                      at tech.timmo.terminalwatch.ConfigActivity.onCreate(ConfigActivity.java:0)
                                                                      at android.app.Activity.performCreate(Activity.java:6251)
                                                                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
                                                                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2403)
                                                                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2510)
                                                                      at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4111)
                                                                      at android.app.ActivityThread.-wrap15(ActivityThread.java)
                                                                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1369)
                                                                      at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                      at android.os.Looper.loop(Looper.java:148)
                                                                      at android.app.ActivityThread.main(ActivityThread.java:5461)
                                                                      at java.lang.reflect.Method.invoke(Native Method)
                                                                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                                                                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
</code></pre>

<p>Here is my initialisation in <code>onCreate()</code> which the error points to the first line for <code>MobileAds.initialise</code>:</p>

<pre><code>MobileAds.initialize(getApplicationContext(), getString(R.string.banner_ad_unit_id));
AdView adView = (AdView) findViewById(R.id.adView);
adView.setAdSize(AdSize.SMART_BANNER);
AdRequest adRequest = new AdRequest.Builder()
        .addTestDevice("9A3855EFE9914A3C40BF5A33DABB4701")
        .build();
adView.loadAd(adRequest);
</code></pre>

<p>The xml:</p>

<pre><code>&lt;com.google.android.gms.ads.AdView
    android:id="@+id/adView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:adSize="SMART_BANNER"
    app:adUnitId="@string/banner_ad_unit_id" /&gt;
</code></pre>