Fatal error: Class 'Doctrine\DBAL\Event\SchemaEventArgs' not found in /var/www/html/dev/spa/vendor/doctrine/dbal/lib/Doctrine/DBAL/Event/SchemaIndexDefinitionEventArgs.php on line 33

Call Stack:
    0.0005     241368   1. {main}() /var/www/html/dev/spa/vendor/doctrine/dbal/lib/Doctrine/DBAL/Event/SchemaIndexDefinitionEventArgs.php:0