Fatal error: Uncaught Error: Class "Doctrine\Persistence\Mapping\Driver\MappingDriverChain" not found in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/doctrine/orm/src/Mapping/Driver/DriverChain.php:14 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/doctrine/orm/src/Mapping/Driver/DriverChain.php on line 14