Fatal error: Uncaught Error: Class 'ET_Core_API_Email_Provider' not found in C:\xampp\htdocs\wp-content\themes\Divi\core\components\api\email\FluentCRM.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\themes\Divi\core\components\api\email\FluentCRM.php on line 19