Fatal error: Uncaught Error: Class "Orchestra\Testbench\TestCase" not found in /home/waleed/public_html/subdomains/campaigns.waleed.jt.mumara.dev/vendor/laravel/ui/tests/AuthBackend/RegistersUsersTest.php:18 Stack trace: #0 {main} thrown in /home/waleed/public_html/subdomains/campaigns.waleed.jt.mumara.dev/vendor/laravel/ui/tests/AuthBackend/RegistersUsersTest.php on line 18