Fatal error: Uncaught Error: Class "Orchestra\Testbench\TestCase" not found in /home/slsiluser/public_html/service-portal-mobile-responsive/vendor/laravel/ui/tests/AuthBackend/AuthenticatesUsersTest.php:16 Stack trace: #0 {main} thrown in /home/slsiluser/public_html/service-portal-mobile-responsive/vendor/laravel/ui/tests/AuthBackend/AuthenticatesUsersTest.php on line 16