Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/www/aes-demo/api-8.0.0#316/vendor/sweetrdf/easyrdf/test/TestCase.php:18 Stack trace: #0 {main} thrown in /home/www/aes-demo/api-8.0.0#316/vendor/sweetrdf/easyrdf/test/TestCase.php on line 18