Thanks for your quick revert.
I have two environment, both are not in production.
Ubuntu 18.04 ( PI 3.5 + Freeradius both are installed and running perfectly fine )
in this setup, I am using AD as user resolver with below config:
ldaps://ldapserver ( my AD server hostname )
and when click on test ldap resolver, it work perfectly fine
this environment is Exactly similar to above envoirnment except OS, this is Ubuntu 20.04 and all other PI related setups are same environment 1.
when clicking " Test Ldap Resolver " getting this message.
LDAPSocketOpenError((socket ssl wrapping error: [SSL: UNSUPPORTED_PROTOCOL] unsupported protocol (_ssl.c:1123),))
Unfortunately no error logs in /var/log/privacyidea
please let me know if need any more info.