Missing privilege separation directory: /var/run/sshd

And maybe also:

There is no directory /var/run/fail2ban to contain the socket

/var/log/syslog

I fixed these issues after an update & upgrade process by hand doing:

mkdir /var/run/sshd && chmod 0755 /var/run/sshd
mkdir /var/run/fail2ban && chmod 0755 /var/run/fail2ban

I think that’s only an temporally countermeasure, probably after new update or reboot, It will be broken again 🙁