Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/demohatinco/public_html/petmates_backend/vendor/dougsisk/laravel-country-state/tests/CountryStateTest.php:8 Stack trace: #0 {main} thrown in /home/demohatinco/public_html/petmates_backend/vendor/dougsisk/laravel-country-state/tests/CountryStateTest.php on line 8