Fatal error: Class 'Doctrine\DBAL\Schema\AbstractSchemaManager' not found in /var/www/html/dev/spa/vendor/doctrine/dbal/lib/Doctrine/DBAL/Schema/DB2SchemaManager.php on line 33

Call Stack:
    0.0008     272672   1. {main}() /var/www/html/dev/spa/vendor/doctrine/dbal/lib/Doctrine/DBAL/Schema/DB2SchemaManager.php:0