the post from which we copy information.
	 * @param int   $to   ID of the post to which we paste information.
	 *
	 * @return array List of custom fields names.
	 */
	public static function save_polylang_meta( $keys, $sync, $from, $to ) {
		// Copy only for a new post.
		if ( ! $sync ) {
			Plugin::$instance->db->copy_elementor_meta( $from, $to );
		}

		return $keys;
	}

	private static function yoast_duplicate_post() {
		add_filter( 'duplicate_post_excludelist_filter', function( $meta_excludelist ) {
			$exclude_list = [
				Document::TYPE_META_KEY,
				'_elementor_page_assets',
				'_elementor_controls_usage',
				'_elementor_css',
				'_elementor_screenshot',
			];

			return array_merge( $meta_excludelist, $exclude_list );
		} );

		add_action( 'duplicate_post_post_copy', function( $new_post_id, $post ) {
			$original_template_type = get_post_meta( $post->ID, Document::TYPE_META_KEY, true );
			if ( ! empty( $original_template_type ) ) {
				update_post_meta( $new_post_id, Document::TYPE_META_KEY, $original_template_type );
			}
		}, 10, 2 );
	}

	/**
	 * Process post meta before WP importer.
	 *
	 * Normalize Elementor post meta on import, We need the `wp_slash` in order
	 * to avoid the unslashing during the `add_post_meta`.
	 *
	 * Fired by `wp_import_post_meta` filter.
	 *
	 * @since 1.0.0
	 * @access public
	 * @static
	 *
	 * @param array $post_meta Post meta.
	 *
	 * @return array Updated post meta.
	 */
	public static function on_wp_import_post_meta( $post_meta ) {
		$is_wp_importer_before_0_7 = self::is_wp_importer_before_0_7();

		if ( $is_wp_importer_before_0_7 ) {
			foreach ( $post_meta as &$meta ) {
				if ( '_elementor_data' === $meta['key'] ) {
					$meta['value'] = wp_slash( $meta['value'] );
					break;
				}
			}
		}

		return $post_meta;
	}

	/**
	 * Is WP Importer Before 0.7
	 *
	 * Checks if WP Importer is installed, and whether its version is older than 0.7.
	 *
	 * @return bool
	 */
	public static function is_wp_importer_before_0_7() {
		$wp_importer = get_plugins( '/wordpress-importer' );

		if ( ! empty( $wp_importer ) ) {
			$wp_importer_version = $wp_importer['wordpress-importer.php']['Version'];

			if ( version_compare( $wp_importer_version, '0.7', '<' ) ) {
				return true;
			}
		}

		return false;
	}

	/**
	 * Process post meta before WXR importer.
	 *
	 * Normalize Elementor post meta on import with the new WP_importer, We need
	 * the `wp_slash` in order to avoid the unslashing during the `add_post_meta`.
	 *
	 * Fired by `wxr_importer.pre_process.post_meta` filter.
	 *
	 * @since 1.0.0
	 * @access public
	 * @static
	 *
	 * @param array $post_meta Post meta.
	 *
	 * @return array Updated post meta.
	 */
	public static function on_wxr_importer_pre_process_post_meta( $post_meta ) {
		$is_wp_importer_before_0_7 = self::is_wp_importer_before_0_7();

		if ( $is_wp_importer_before_0_7 ) {
			if ( '_elementor_data' === $post_meta['key'] ) {
				$post_meta['value'] = wp_slash( $post_meta['value'] );
			}
		}

		return $post_meta;
	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'Elementor\Compatibility' not found in /var/www/html/dportilho.com.br/web/wp-content/plugins/elementor/includes/plugin.php:873
Stack trace:
#0 /var/www/html/dportilho.com.br/web/wp-content/plugins/elementor/includes/plugin.php(629): Elementor\Plugin-&gt;__construct()
#1 /var/www/html/dportilho.com.br/web/wp-content/plugins/elementor/includes/plugin.php(886): Elementor\Plugin::instance()
#2 /var/www/html/dportilho.com.br/web/wp-content/plugins/elementor/elementor.php(58): require('/var/www/html/d...')
#3 /var/www/html/dportilho.com.br/web/wp-settings.php(526): include_once('/var/www/html/d...')
#4 /var/www/html/dportilho.com.br/web/wp-config.php(126): require_once('/var/www/html/d...')
#5 /var/www/html/dportilho.com.br/web/wp-load.php(50): require_once('/var/www/html/d...')
#6 /var/www/html/dportilho.com.br/web/wp-blog-header.php(13): require_once('/var/www/html/d...')
#7 /var/www/html/dportilho.com.br/web/index.php(17): require('/var/www/html/d...')
#8 {main}
  thrown in <b>/var/www/html/dportilho.com.br/web/wp-content/plugins/elementor/includes/plugin.php</b> on line <b>873</b><br />