Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\r10ca\vendor\fruitcake\php-cors\tests\CorsServiceTest.php:33 Stack trace: #0 {main} thrown in C:\xampp\htdocs\r10ca\vendor\fruitcake\php-cors\tests\CorsServiceTest.php on line 33