Fatal error: Uncaught Error: Class 'Spatie\EloquentSortable\Test\TestCase' not found in E:\xampp\htdocs\www\yunwei\qr2500\vendor\spatie\eloquent-sortable\tests\SortableTest.php:7 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\yunwei\qr2500\vendor\spatie\eloquent-sortable\tests\SortableTest.php on line 7