xmpp - ejabberdctl command "create_room" not known

Question

I wanted to setup a simple jabber server to enable chat with my team. Everything went smoothly until the point I wanted to create conference rooms.

When I run ejabberdctl with no parameters, the option create_room does not appear in the list, and if I run ejabberdctl create_room test I get the following response:

Error: command "create_room" not known.

My config file (/etc/ejabberd/ejabberd.cfg) is as following:

%% Admins of this server are also admins of MUC service:
{access, muc_admin, [{allow, admin}]}.

%% All users are allowed to use MUC service:
{access, muc, [{allow, all}]}. 

{mod_muc,      [
          %%{host, "conference.@HOST@"},
          {access, all},
          {access_create, all}, 
          {access_persistent, all},
          {access_admin, muc_admin},
          {max_users, 500}
         ]},