Fatal error: Uncaught Error: Class 'yii\base\Action' not found in /var/www/html/ng-crm/yiiapp/vendor/xj/yii2-qrcode-widget/actions/QRcodeAction.php:16 Stack trace: #0 {main} thrown in /var/www/html/ng-crm/yiiapp/vendor/xj/yii2-qrcode-widget/actions/QRcodeAction.php on line 16