Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in I:\www\pvcDi\vendor\php-extended\php-mime-type-object\tests\MimeTypeProviderTest.php:28 Stack trace: #0 {main} thrown in I:\www\pvcDi\vendor\php-extended\php-mime-type-object\tests\MimeTypeProviderTest.php on line 28