Fatal error: Uncaught Error: Class "kartik\alert\AlertBlock" not found in /home/apolo/public_html/sgdpr/vendor/kartik-v/yii2-widgets/src/AlertBlock.php:18 Stack trace: #0 {main} thrown in /home/apolo/public_html/sgdpr/vendor/kartik-v/yii2-widgets/src/AlertBlock.php on line 18