Fatal error: Class 'Doctrine\Common\EventArgs' not found in /var/www/html/dev/spa/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Event/ManagerEventArgs.php on line 34

Call Stack:
    0.0003     234072   1. {main}() /var/www/html/dev/spa/vendor/doctrine/common/lib/Doctrine/Common/Persistence/Event/ManagerEventArgs.php:0