Add an id for ConstraintLayout Flow

                app:layout_constraintWidth_max="48dp" />

            <androidx.constraintlayout.helper.widget.Flow

                android:id="@+id/action_buttons_flow"

                android:layout_width="match_parent"

                android:layout_height="match_parent"

                app:constraint_referenced_ids="action_button_reply_container,action_button_boost_container,action_button_quote,action_button_favorite_container,action_button_bookmark,action_button_translate,action_button_maths,status_add_custom_emoji,status_emoji,action_button_more"