Fatal error: Uncaught Error: Class "Dcat\Admin\Widgets\Metrics\Line" not found in E:\xampp\htdocs\www\yunwei\qr250\app\Admin\Metrics\Examples\NewUsers.php:8 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\yunwei\qr250\app\Admin\Metrics\Examples\NewUsers.php on line 8