Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/notification-bundle/Tests/Backend/PostponeRuntimeBackendTest.php:23 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/notification-bundle/Tests/Backend/PostponeRuntimeBackendTest.php on line 23