Can't call void android.view.View.setElevation(float) on null object in lapism/SearchView

To fix this problem you have to update your XML file which contains SearchView and AppBarLayout. Add android:stateListAnimator="@null" to your AppBarLayout as shown below.

 <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:stateListAnimator="@null">

It shows warning that android:stateListAnimator="@null" attribute stateListAnimator is only used in API level 21. But I've checked source code of the library and it crashes in the SearchBehavior class when it tries to set mAppBarLayout.setStateListAnimator(null);

EDIT

As was mention in comments below this issue is related more to the android components native crash on scrolling in RecyclerView+CollapsingToolbarLayout