Attempted to remove group prototype '

(vm)' from Template Virt VMware and received the following error:

Error in query [DELETE FROM group_prototype WHERE group_prototypeid='6'] [Cannot delete or update a parent row: a foreign key constraint fails (`zabbix`.`group_discovery`, CONSTRAINT `c_group_discovery_2` FOREIGN KEY (`parent_group_prototypeid`) REFERENCES `group_prototype` (`group_prototypeid`))]
SQL statement execution has failed "DELETE FROM group_prototype WHERE group_prototypeid='6'"

This is a fresh install of 2.1.8 with a fresh database.