Fatal error: Uncaught Error: Class "kartik\sidenav\SideNav" not found in /home/apolo/public_html/qua_sgdpr/vendor/kartik-v/yii2-widgets/src/SideNav.php:39 Stack trace: #0 {main} thrown in /home/apolo/public_html/qua_sgdpr/vendor/kartik-v/yii2-widgets/src/SideNav.php on line 39