sshd: no hostkeys available -- exiting.

[dyrnq]

Jun 24 05:28:28 debian sshd[469]: sshd: no hostkeys available -- exiting.
Jun 24 05:28:28 debian systemd[1]: ssh.service: Control process exited, code=exited, status=1/FAILURE
Jun 24 05:28:28 debian systemd[1]: ssh.service: Failed with result 'exit-code'.
Jun 24 05:28:28 debian systemd[1]: Failed to start OpenBSD Secure Shell server.
Jun 24 05:28:28 debian chronyd[475]: chronyd version 4.0 starting (+CMDMON +NTP +REFCLOCK +RTC +PRIVDROP +SCFILTER +SIGND +ASYNCDNS +NTS +SECHASH +IPV6 -DEBUG)
Jun 24 05:28:28 debian chronyd[475]: Using right/UTC timezone to obtain leap second data
Jun 24 05:28:28 debian chronyd[475]: Loaded seccomp filter
Jun 24 05:28:28 debian systemd[1]: Started chrony, an NTP client/server.
Jun 24 05:28:28 debian systemd[1]: Reached target Multi-User System.
Jun 24 05:28:28 debian systemd[1]: Reached target Graphical Interface.
Jun 24 05:28:28 debian systemd[1]: Reached target System Time Synchronized.
Jun 24 05:28:28 debian systemd[1]: Started Daily apt download activities.
Jun 24 05:28:28 debian systemd[1]: Started Daily apt upgrade and clean activities.
Jun 24 05:28:28 debian systemd[1]: Started Periodic ext4 Online Metadata Check for All Filesystems.
Jun 24 05:28:28 debian systemd[1]: Started Discard unused blocks once a week.
Jun 24 05:28:28 debian systemd[1]: Started Daily rotation of log files.
Jun 24 05:28:28 debian systemd[1]: Started Daily man-db regeneration.
Jun 24 05:28:28 debian systemd[1]: Reached target Timers.
Jun 24 05:28:28 debian systemd[1]: Starting Update UTMP about System Runlevel Changes...
Jun 24 05:28:28 debian systemd[1]: systemd-update-utmp-runlevel.service: Succeeded.
Jun 24 05:28:28 debian systemd[1]: Finished Update UTMP about System Runlevel Changes.
Jun 24 05:28:28 debian systemd[1]: Startup finished in 1.368s (kernel) + 6.940s (userspace) = 8.308s.
Jun 24 05:28:28 debian systemd[1]: ssh.service: Scheduled restart job, restart counter is at 1.
Jun 24 05:28:28 debian systemd[1]: Stopped OpenBSD Secure Shell server.
Jun 24 05:28:28 debian systemd[1]: Starting OpenBSD Secure Shell server...
Jun 24 05:28:28 debian sshd[479]: sshd: no hostkeys available -- exiting.