LDAP not working

Trying to use LDAP with Graphite.

I am using a python3 virtual environment.

Here are my LDAP settings in local_settings.py:

DEBUG = True
### LDAP authentication setup
USE_LDAP_AUTH = True
LDAP_SERVER = "serveraddress"
LDAP_PORT = 1234
LDAP_USE_TLS = False
### Manual URI / query setup
LDAP_URI = "ldaps://serveraddress:1234"
LDAP_SEARCH_BASE = "ou=users,o=company"
LDAP_BASE_USER = "cn=user,ou=users,o=company"
LDAP_BASE_PASS = "*******"
LDAP_USER_QUERY = "(cn=%s)"

I have the following python modules:
asgiref==3.3.0
attrs==20.2.0
Automat==20.2.0
cairocffi==1.1.0
cffi==1.14.3
Django==2.2
django-tagging==0.4.3
graphite-web==1.1.7
mod-wsgi==4.7.1
psycopg2-binary==2.8.6
pyasn1==0.4.8
pyasn1-modules==0.2.8
pycparser==2.20
pyparsing==2.4.7
python-ldap==3.3.1
python-memcached==1.59
python3-ldap==0.9.8.4
pytz==2020.1
scandir==1.10.0
six==1.15.0
sqlparse==0.4.1
urllib3==1.25.11
whisper==1.1.7
zope.interface==5.1.2

When I tcpdump on the destination port for the ldap server I don't see any traffic at all. It seems Graphite doesn't even try.

If I try ldap client in python command line I see the traffic with tcpdump. nc -v ldapserver 1234 also works.

I also tried disabling selinux but no difference.

Connecting with ldap client works well so no network issues.

Does it not work with python3?