Fatal error: Uncaught Error: Class "yii\behaviors\AttributeBehavior" not found in /var/www/html/prod/vendor/yiisoft/yii2/behaviors/SluggableBehavior.php:64 Stack trace: #0 {main} thrown in /var/www/html/prod/vendor/yiisoft/yii2/behaviors/SluggableBehavior.php on line 64