Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/trairtil/public_html/vendor/laravel/framework/tests/Foundation/Testing/TestCaseTest.php:15 Stack trace: #0 {main} thrown in /home/trairtil/public_html/vendor/laravel/framework/tests/Foundation/Testing/TestCaseTest.php on line 15