Remove warning : Invalid argument supplied for foreach() on functions.php on line 451

/*
 * Remove warning : Invalid argument supplied for foreach() on functions.php on line 451
 * @version 1.2
 * 
 * Open file: wp-content/themes/enliven/inc/functions.php
 * 
 * Select codes from 444 to 458
 * Replace it by new codes below:
 *
 */

if ( ! function_exists( 'enliven_add_first_and_last_class_for_menuitem' ) ) {

	function enliven_add_first_and_last_class_for_menuitem( $items ) {
		$parent = array();
		
		if( !empty( $items ) ){
			foreach ( $items as $k => $v ) {
				$parent[ $v->menu_item_parent ][] = $v;
			}
		}
	
		if( !empty( $parent ) ){
			foreach ( $parent as $k => $v ) {
				$v[0]->classes[]           		= 'enliven-menu-item-first';
				$v[ count( $v ) -1 ]->classes[] = 'enliven-menu-item-last';
			}
		}
		
		return $items;
	}
}