Error inflating class - NestedScrollView - class not found

The full class name is android.support.v4.widget.NestedScrollView.

Replace the <NestedScrollView> element with <android.support.v4.widget.NestedScrollView> and it should work fine. Make sure you have the v4 support library in your build.gradle file, too.

Change it to

    <androidx.core.widget.NestedScrollView

        android:layout_width="match_parent"

        android:layout_height="wrap_content">