ldap3 query group users returns no user data

Question

I'm using below script to retrieve the members of group using ldap3 in python 3.5 but, it's giving me only the group details and no user data.

script :

conn.search(search_base='CN=Admins,DC=Server,DC=com', search_filter='(&(objectClass=GROUP)(cn=Admins))' , search_scope=SUBTREE, attributes = ['cn', 'givenName'], size_limit=0) 

Output :

[DN: CN=Admins,OU=UK,DC=SERVER,DC=com - STATUS: Read - READ TIME: 2018-11-16T10:34:29.233019

    cn: Admins

]