Fatal error: Uncaught Error: Class "Whoops\TestCase" not found in D:\xampp\htdocs\bred-web-app\vendor\filp\whoops\tests\Whoops\Handler\CallbackHandlerTest.php:7 Stack trace: #0 {main} thrown in D:\xampp\htdocs\bred-web-app\vendor\filp\whoops\tests\Whoops\Handler\CallbackHandlerTest.php on line 7