Fatal error: Uncaught Error: Class 'Doctrine\Common\EventArgs' not found in /opt/lampp/htdocs/kuesioner/vendor/doctrine/dbal/lib/Doctrine/DBAL/Event/ConnectionEventArgs.php:14 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/doctrine/dbal/lib/Doctrine/DBAL/Event/ConnectionEventArgs.php on line 14