Fatal error: Uncaught Error: Class 'Acelle\Model\SendingServerMailgun' not found in /home/appilogicx/public_html/marketing/app/Model/SendingServerMailgunApi.php:28 Stack trace: #0 {main} thrown in /home/appilogicx/public_html/marketing/app/Model/SendingServerMailgunApi.php on line 28