systemctl y journal

[MLP <odomarlp@protonmail.com>]

Hola.
Solicito ayuda pues no soy informático y por mucho que he buscado en la red no doy encontrado la solución. El problema es este:

systemctl --failed
  UNIT                     LOAD   ACTIVE SUB    DESCRIPTION
● apache2.service          loaded failed failed The Apache HTTP Server
● clamav-daemon.service    loaded failed failed Clam AntiVirus userspace daemon
● clamav-freshclam.service loaded failed failed ClamAV virus database updater
● logrotate.service        loaded failed failed Rotate log files

LOAD   = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB    = The low-level unit activation state, values depend on unit type.

4 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.

Me imagino que una solución sería que elimine apache y clamav, y los vuelva a instalar, pero al problema de logrotate.service no le encuentro solución pues no sabría reconfigurarlo.
(Ya he intentado start, restart, reload, enable, etc.)