Edit file File name : GuidHelper.php Content :<?php declare(strict_types = 1); namespace CreativeMail\Helpers; /** * Class GuidHelper * * @package CreativeMail\Helpers */ final class GuidHelper { /** * Generates a GUID. * * @return string */ public static function generate_guid(): string { return sprintf( '%04X%04X-%04X-%04X-%04X-%04X%04X%04X', wp_rand(0, 65535), wp_rand(0, 65535), wp_rand(0, 65535), wp_rand(16384, 20479), wp_rand(32768, 49151), wp_rand(0, 65535), wp_rand(0, 65535), wp_rand(0, 65535) ); } } Save