Redmine

Hi!

I'm trying to setup redmine + postgresql + thin + nginx with user authentication through LDAP (OpenLDAP). Right now, access to the admin webpage (admin user) is working but when I try to test the LDAP configuration I get the error "Unable to connect (no implicit conversion of Symbol into Integer)". This looks like some generic error from ruby (I know nothing about ruby, btw).

Could you provide some guidance to solve this?

Redmine installation information:

Environment:
  Redmine version                3.2.0.stable
  Ruby version                   2.1.8-p440 (2015-12-16) [x86_64-linux]
  Rails version                  4.2.5
  Environment                    production
  Database adapter               PostgreSQL
SCM:
  Git                            2.7.0
  Filesystem                     
Redmine plugins:
  no plugin installed

LDAP config:

LDAPS (port 636)
Account and password: credentials of the DN BIND user
LDAP Filter empty
A LDAP search is working both locally and from other machines.

Thanks in advance!