Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Event\SchemaEventArgs' not found in /srv/www/c5www/html/updates/concrete5-8.5.1/concrete/vendor/doctrine/dbal/lib/Doctrine/DBAL/Event/SchemaDropTableEventArgs.php:32 Stack trace: #0 {main} thrown in /srv/www/c5www/html/updates/concrete5-8.5.1/concrete/vendor/doctrine/dbal/lib/Doctrine/DBAL/Event/SchemaDropTableEventArgs.php on line 32