Fatal error: Uncaught Error: Class 'Doctrine\DBAL\Schema\AbstractSchemaManager' not found in C:\Apache24\htdocs\cwlms\vendor\doctrine\dbal\lib\Doctrine\DBAL\Schema\DB2SchemaManager.php:21 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cwlms\vendor\doctrine\dbal\lib\Doctrine\DBAL\Schema\DB2SchemaManager.php on line 21