Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/gingerbrup/rappelapi/vendor/jms/serializer-bundle/Tests/DependencyInjection/ConfigurationTest.php:11 Stack trace: #0 {main} thrown in /home/gingerbrup/rappelapi/vendor/jms/serializer-bundle/Tests/DependencyInjection/ConfigurationTest.php on line 11