Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/neondra/www/vendor/laravel/framework/tests/View/Concerns/ManagesStacksTest.php:8 Stack trace: #0 {main} thrown in /home/neondra/www/vendor/laravel/framework/tests/View/Concerns/ManagesStacksTest.php on line 8