Failed to initialize any backend for Jail 'sshd' since 2.3.0

[Philipp Daniels]

Hi,

since the switch to systemd backend for sshd with version 2.3.0 of your role fail2ban fails to start on my system (Ubuntu 20.04.6 LTS):

Failed to initialize any backend for Jail 'sshd'

On my system sshd still logs failed logins into auth.log.