Add ids

app/src/main/res/layout/fragment_data_list.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:app="http://schemas.android.com/apk/res-auto"
+	android:id="@+id/container"
 	android:layout_width="match_parent"
 	android:layout_height="match_parent"
 	xmlns:tools="http://schemas.android.com/tools">
@@ -13,6 +14,7 @@
 		app:layout_behavior="@string/appbar_scrolling_view_behavior">
 
 		<androidx.constraintlayout.widget.ConstraintLayout
+			android:id="@+id/constraintLayout"
 			android:layout_width="match_parent"
 			android:layout_height="wrap_content">