Fatal error: Uncaught Error: Class 'yii\base\Widget' not found in /var/www/html/ng-crm/yiiapp/vendor/xj/yii2-qrcode-widget/widgets/Text.php:13 Stack trace: #0 {main} thrown in /var/www/html/ng-crm/yiiapp/vendor/xj/yii2-qrcode-widget/widgets/Text.php on line 13