Fatal error: Uncaught Error: Class "Orchestra\Testbench\TestCase" not found in /home/trairtil/public_html/vendor/laravel/framework/tests/Integration/Mail/SendingMarkdownMailTest.php:12 Stack trace: #0 {main} thrown in /home/trairtil/public_html/vendor/laravel/framework/tests/Integration/Mail/SendingMarkdownMailTest.php on line 12