package:openssh-server:1:7.6p1-4ubuntu0.3
Setting up openssh-server (1:7.6p1-4ubuntu0.3) ...
Job for ssh.service failed because the control process exited with error code.
See "systemctl status ssh.service" and "journalctl -xe" for details.
invoke-rc.d: initscript ssh, action "restart" failed.
● ssh.service - OpenBSD Secure Shell server
   Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: enabled)
   Active: activating (auto-restart) (Result: exit-code) since Fri 2020-11-20 22:00:10 CET; 18ms ago
  Process: 15539 ExecStartPre=/usr/sbin/sshd -t (code=exited, status=255)

Nov 20 22:00:10 Darwin systemd[1]: Failed to start OpenBSD Secure Shell server.
dpkg: error processing package openssh-server (--configure):
 installed openssh-server package post-installation script subprocess returned error exit status 1