Fatal Exception: java.lang.NullPointerException

[billdizl]

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean androidx.recyclerview.widget.RecyclerView$ViewHolder.shouldIgnore()' on a null object reference at androidx.recyclerview.widget.RecyclerView.findMinMaxChildLayoutPositions(RecyclerView.java:4485) at androidx.recyclerview.widget.RecyclerView.didChildRangeChange(RecyclerView.java:4501) at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep3(RecyclerView.java:4404) at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:4031) at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4578) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at androidx.viewpager2.widget.ViewPager2.onLayout(ViewPager2.java:527) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332) at android.widget.FrameLayout.onLayout(FrameLayout.java:270) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332) at android.widget.FrameLayout.onLayout(FrameLayout.java:270) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at androidx.recyclerview.widget.RecyclerView$LayoutManager.layoutDecoratedWithMargins(RecyclerView.java:9878) at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1689) at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1591) at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:668) at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4309) at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:4012) at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4578) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1103) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at androidx.viewpager.widget.ViewPager.onLayout(ViewPager.java:1775) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673) at android.widget.LinearLayout.onLayout(LinearLayout.java:1582) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1103) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at com.scwang.smart.refresh.layout.SmartRefreshLayout.onLayout(SmartRefreshLayout.java:651) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at androidx.viewpager.widget.ViewPager.onLayout(ViewPager.java:1775) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673) at android.widget.LinearLayout.onLayout(LinearLayout.java:1582) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332) at android.widget.FrameLayout.onLayout(FrameLayout.java:270) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673) at android.widget.LinearLayout.onLayout(LinearLayout.java:1582) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332) at android.widget.FrameLayout.onLayout(FrameLayout.java:270) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1829) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1673) at android.widget.LinearLayout.onLayout(LinearLayout.java:1582) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332) at android.widget.FrameLayout.onLayout(FrameLayout.java:270) at com.android.internal.policy.DecorView.onLayout(DecorView.java:779) at android.view.View.layout(View.java:22466) at android.view.ViewGroup.layout(ViewGroup.java:6304) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:3154) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2611) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1742) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7765) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:967) at android.view.Choreographer.doCallbacks(Choreographer.java:791) at android.view.Choreographer.doFrame(Choreographer.java:726) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:952) at android.os.Handler.handleCallback(Handler.java:883) at android.os.Handler.dispatchMessage(Handler.java:100) at android.os.Looper.loop(Looper.java:214) at android.app.ActivityThread.main(ActivityThread.java:7359) at java.lang.reflect.Method.invoke(Method.java) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:491) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:940)