Fatal error: Uncaught Error: Class 'AuthorizeNetSIM_Form' not found in /home/ffl2020/public_html/vendor/ramzyvirani/yii2-authorizenet/AuthorizeNetSIM_Form.php:5 Stack trace: #0 {main} thrown in /home/ffl2020/public_html/vendor/ramzyvirani/yii2-authorizenet/AuthorizeNetSIM_Form.php on line 5