java.lang.NullPointerException

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  • java.lang.NullPointerException: Attempt to invoke virtual method 'void com.appnext.ads.interstitial.Interstitial.showAd()' on a null object reference at dn.sampleproject.com.MainActivityBrowser.ShowAdOnClick(MainActivityBrowser.java:273) at dn.sampleproject.adapters.com.Item$8.onClick(Item.java:605) at android.view.View.performClick(View.java:5637) at android.view.View$PerformClick.run(View.java:22429) at android.os.Handler.handleCallback(Handler.java:751) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6119) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
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