Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in E:\install\laragon\www\extranet_gpharma_demo\vendor\laravel\framework\tests\Notifications\NotificationMailMessageTest.php:10 Stack trace: #0 {main} thrown in E:\install\laragon\www\extranet_gpharma_demo\vendor\laravel\framework\tests\Notifications\NotificationMailMessageTest.php on line 10