My Unity Android App Crashes Whenever I Request Interstial Ad in my app, I cannot figure out what is causing this. Earlier I have worked with Interstial Ads and they were working fine. Since 2 days this problem is occuring. In Unity Editor, the Console shows it has loaded the Ad, but when I build and run in my Device or Emulator, the RequestInterstitial Crashes the app. It was working fine earlier. Please help...
Here is the Log of Crash
java.lang.Error: FATAL EXCEPTION [main]
Unity version : 5.5.0f3
Device model : Xiaomi Redmi Note 4
Device fingerprint: xiaomi/mido/mido:6.0.1/MMB29M/V8.2.10.0.MCFMIDL:user/release-keys
Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/android/gms/ads/InterstitialAd;
at com.google.unity.ads.Interstitial$1.run(Interstitial.java:64)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5438)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)
Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.ads.InterstitialAd" on path: DexPathList[[zip file "/data/app/com.hh.kk-2/base.apk"],nativeLibraryDirectories=[/data/app/com.hh.kk-2/lib/arm, /data/app/com.hh.kk-2/base.apk!/lib/armeabi-v7a, /vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
... 8 more
Suppressed: java.lang.ClassNotFoundException: com.google.android.gms.ads.InterstitialAd
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 9 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available