Fatal error: Uncaught Error: Class 'yii\base\Event' not found in /home/trafqete/public_html/vendor/wadeshuler/yii2-sms/src/SmsEvent.php:12 Stack trace: #0 {main} thrown in /home/trafqete/public_html/vendor/wadeshuler/yii2-sms/src/SmsEvent.php on line 12