Could you help me to solve the NullPointerException ?

java.lang.NullPointerException: 
  at com.taboola.android.OnScrollChangedListenerImpl.<init> (OnScrollChangedListenerImpl.java:23)
  at com.taboola.android.js.WebViewManager.initScrollChangeListener (WebViewManager.java:149)
  at com.taboola.android.js.WebViewManager.onAdIdRetrieved (WebViewManager.java:141)
  at com.taboola.android.js.WebViewManager.access$300 (WebViewManager.java:34)
  at com.taboola.android.js.WebViewManager$4.onAdIdRetrieved (WebViewManager.java:123)
  at com.taboola.android.js.TaboolaJs$3.onIdRetrieved (TaboolaJs.java:423)
  at com.taboola.android.utils.AdvertisingIdClient$2$2.run (AdvertisingIdClient.java:117)
  at android.os.Handler.handleCallback (Handler.java:808)
  at android.os.Handler.dispatchMessage (Handler.java:101)
  at android.os.Looper.loop (Looper.java:166)
  at android.app.ActivityThread.main (ActivityThread.java:7425)
  at java.lang.reflect.Method.invoke (Native Method)
  at com.android.internal.os.Zygote$MethodAndArgsCaller.run (Zygote.java:245)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:921)