Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Schema\Visitor\AbstractVisitor' not found in C:\Apache24\htdocs\fixedasset\vendor\doctrine\dbal\lib\Doctrine\DBAL\Schema\Visitor\DropSchemaSqlCollector.php:18 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\fixedasset\vendor\doctrine\dbal\lib\Doctrine\DBAL\Schema\Visitor\DropSchemaSqlCollector.php on line 18