Fatal error: Uncaught Error: Class "yii\base\Widget" not found in /home2/yiikharazmisabt/public_html/vendor/ricar2ce/yii2-material-theme/widgets/Card.php:10 Stack trace: #0 {main} thrown in /home2/yiikharazmisabt/public_html/vendor/ricar2ce/yii2-material-theme/widgets/Card.php on line 10