Fatal error: Uncaught Error: Class "WHMCS\Module\AbstractWidget" not found in /home/arismidi/public_html/grupo.arismidia.com.br/modules/widgets/Billing.php:13 Stack trace: #0 {main} thrown in /home/arismidi/public_html/grupo.arismidia.com.br/modules/widgets/Billing.php on line 13