Fatal error: Uncaught Error: Class "yii\widgets\Menu" not found in /home/apolo/public_html/sgdpr/vendor/kartik-v/yii2-widget-sidenav/SideNav.php:46 Stack trace: #0 {main} thrown in /home/apolo/public_html/sgdpr/vendor/kartik-v/yii2-widget-sidenav/SideNav.php on line 46