Fatal error: Uncaught Error: Class "yii\base\Widget" not found in /home/apolo/public_html/sgdpr/vendor/kartik-v/yii2-widget-spinner/Spinner.php:23 Stack trace: #0 {main} thrown in /home/apolo/public_html/sgdpr/vendor/kartik-v/yii2-widget-spinner/Spinner.php on line 23