Fatal error: Uncaught Error: Class "yii\bootstrap4\Widget" not found in /var/www/html/prod/vendor/yiisoft/yii2-bootstrap4/src/Breadcrumbs.php:30 Stack trace: #0 {main} thrown in /var/www/html/prod/vendor/yiisoft/yii2-bootstrap4/src/Breadcrumbs.php on line 30