Fatal error: Uncaught Error: Interface "Doctrine\Common\EventSubscriber" not found in /home/tzuovhm/tzuovhm/lib/private/DB/SetTransactionIsolationLevel.php:18 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/lib/private/DB/SetTransactionIsolationLevel.php on line 18