Edit file File name : class-wp-customize-new-menu-section.php Content :<?php /** * Customize API: WP_Customize_New_Menu_Section class * * @package WordPress * @subpackage Customize * @since 4.4.0 * @deprecated 4.9.0 This file is no longer used as of the menu creation UX introduced in #40104. */ _deprecated_file( basename( __FILE__ ), '4.9.0' ); /** * Customize Menu Section Class * * @since 4.3.0 * @deprecated 4.9.0 This class is no longer used as of the menu creation UX introduced in #40104. * * @see WP_Customize_Section */ class WP_Customize_New_Menu_Section extends WP_Customize_Section { /** * Control type. * * @since 4.3.0 * @var string */ public $type = 'new_menu'; /** * Constructor. * * Any supplied $args override class property defaults. * * @since 4.9.0 * @deprecated 4.9.0 * * @param WP_Customize_Manager $manager Customizer bootstrap instance. * @param string $id A specific ID of the section. * @param array $args Section arguments. */ public function __construct( WP_Customize_Manager $manager, $id, array $args = array() ) { _deprecated_function( __METHOD__, '4.9.0' ); parent::__construct( $manager, $id, $args ); } /** * Render the section, and the controls that have been added to it. * * @since 4.3.0 * @deprecated 4.9.0 */ protected function render() { _deprecated_function( __METHOD__, '4.9.0' ); ?> <li id="accordion-section-<?php echo esc_attr( $this->id ); ?>" class="accordion-section-new-menu"> <button type="button" class="button add-new-menu-item add-menu-toggle" aria-expanded="false"> <?php echo esc_html( $this->title ); ?> </button> <ul class="new-menu-section-content"></ul> </li> <?php } } Save