Found what is the issue, looks like libpam-systemd package was missing in the system, discovered that while installing other libraries, after installation communication between shibboleth and apache works as expected
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1974251 Title: libapache2-mod-shib module doesn't work with 2.4.52 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1974251/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs