Fatal error: Uncaught Error: Class "yii\base\Model" not found in /var/www/html/prod/vendor/mtangoo/yii2-fullcalendar/src/models/Event.php:7 Stack trace: #0 {main} thrown in /var/www/html/prod/vendor/mtangoo/yii2-fullcalendar/src/models/Event.php on line 7