Postgresql error

Unable to enable postgresql for a user

Getting this error

Creating PostgreSQL login …
… PostgreSQL database failed! : SQL create user “example” with password ‘’ nocreatedb nocreateuser failed : ERROR: unrecognized role option “nocreateuser” LINE 1: …mple" with password ‘’ nocreatedb nocreateus… ^

SYSTEM INFORMATION
OS type and version: CentOS 7
Webmin version: REQUIRED
Virtualmin version: REQUIRED
Related products version: RECOMMENDED