Sso post_logout_action

Hello,

====================================
Component | Version
--------- | -------
LibreNMS  | 1.70.1
DB Schema | 2020_11_02_164331_add_powerstate_enum_to_vminfo (191)
PHP       | 7.4.13
Python    | 3.6.8
MySQL     | 5.5.68-MariaDB
RRDTool   | 1.4.8
SNMP      | NET-SNMP 5.7.2
OpenSSL   | 
====================================

[OK]    Composer Version: 2.0.8
[OK]    Dependencies up-to-date.
[OK]    Database connection successful
[OK]    Database schema correct

I am trying to add the logout action from my relying party. I see in the doc two ways to do this, not sure which is true but neither works…

$config['post_logout_action'] = 'https://sso.net/logout';
#$config['auth_logout_handler'] = 'https:/sso.net/logout';

I simply get redirected to my librenms dashboard page.
Am i doing something wrong?

I have not issues with authentication/authorization with sso

Any input is much appreciated.

Regards,
Dave

Sorry for bump but any input is much appreciated!