Can't restart Apache after droplet reboot

Forgive me if I am missing something obvious - I set my site up a year ago, and have not touched it for nearly 9 months. I’ll admit I’m struggling a bit to remember how everything works.

DigitalOcean emailed me to say my droplet had been rebooted. I checked my website and could not load it. I could not even connect to the server via SSH, so I power cycled the droplet. This fixed my terminal access issue, but now that I’m in there, I can’t get Apache to restart. I’ve checked the logs, as the system suggested (see below), but I’m still at a loss to what the actual issue is.

To the best of my knowledge, the site was working properly prior to the reboot. No other changes have been made. Has anyone else had this issue? If so, how did you resolve it? Thanks!

xx@enorugby:~$ sudo systemctl restart apache2
Job for apache2.service failed because the control process exited with error code.
See "systemctl status apache2.service" and "journalctl -xe" for details.

xx@enorugby:~$ systemctl status apache2.service
● apache2.service - The Apache HTTP Server
   Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor preset: enabled)
  Drop-In: /lib/systemd/system/apache2.service.d
           └─apache2-systemd.conf
   Active: failed (Result: exit-code) since Thu 2019-10-31 20:55:19 UTC; 27s ago
  Process: 2865 ExecStart=/usr/sbin/apachectl start (code=exited, status=1/FAILURE)

xx@enorugby:~$ journalctl -xe
Hint: You are currently not seeing messages from other users and the system.
      Users in groups 'adm', 'systemd-journal' can see all messages.
      Pass -q to turn off this notice.
--
-- Unit UNIT has finished starting up.
--
-- The start-up result is RESULT.
Oct 31 20:44:15 enorugby.com systemd[1600]: Reached target Basic System.
-- Subject: Unit UNIT has finished start-up
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit UNIT has finished starting up.
--
-- The start-up result is RESULT.
Oct 31 20:44:15 enorugby.com systemd[1600]: Reached target Default.
-- Subject: Unit UNIT has finished start-up
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit UNIT has finished starting up.
--
-- The start-up result is RESULT.
Oct 31 20:44:15 enorugby.com systemd[1600]: Startup finished in 71ms.
-- Subject: User manager start-up is now complete
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- The user manager instance for user 1000 has been started. All services queued for starting have been started. Note that other services might still be starting up or be started at any later time.
--
-- Startup of the manager took 71934 microseconds.