Cannot login via LDAP

I've created a new instance of observium, by copying DB and all the files from the "old" one.

New instance is running on a fresh ubuntu 22.04 with PHP8.1, and the old one is using Centos 7.9 with PHP 7.1

On the fresh machine everything works, except LDAP authentication, by switching to MySQL auth, no issue. When I insert user/password, no messages appears, even in case of i put random user/pass.

Both the servers are authenticating to the same external OpenLDAP instance.

Attached:

• configurations of the servers. Filename server_config[old-new].png_
• config.php for the LDAP part, same for both. Filename config.php
• debug made with "/debug" in the URL, of both new (the errored one) and the old one (the one that works). Filename debug[old-new].txt_