Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Schema\Visitor\AbstractVisitor' not found in /home/app/htdocs/message_gateway/vendor/doctrine/dbal/lib/Doctrine/DBAL/Schema/Visitor/DropSchemaSqlCollector.php:18
Stack trace:
#0 {main}
thrown in /home/app/htdocs/message_gateway/vendor/doctrine/dbal/lib/Doctrine/DBAL/Schema/Visitor/DropSchemaSqlCollector.php on line 18