Edit File: control-manager.php
<?php namespace MetForm\Controls; defined( 'ABSPATH' ) || exit; /** * Elementor controls manager. * * Elementor controls manager handler class is responsible for registering and * initializing all the supported controls, both regular controls and the group * controls. * * @since 1.0.0 */ abstract class Controls_Manager extends \Elementor\Controls_Manager{ const FORMPICKER = 'formpicker'; }