Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/demoinvfsanz/public_html/vendor/laravel/framework/tests/Http/HttpResponseTest.php:13 Stack trace: #0 {main} thrown in /home/demoinvfsanz/public_html/vendor/laravel/framework/tests/Http/HttpResponseTest.php on line 13