here the message
Active: failed (Result: exit-code) since Tue 2020-08-11 23:47:19 BST; 184ms ago
Docs: man:systemd-sysv-generator(8)
Process: 26251 ExecStart=/etc/init.d/monit start (code=exited, status=1/FAILURE)
Aug 11 23:47:19 raspberrypi systemd[1]: Starting LSB: service and resource monitoring daemon...
Aug 11 23:47:19 raspberrypi monit[26251]: Starting daemon monitor: monitSegmentation fault
Aug 11 23:47:19 raspberrypi monit[26251]: failed!
Aug 11 23:47:19 raspberrypi systemd[1]: monit.service: Control process exited, code=exited, status=1/FAILURE
Aug 11 23:47:19 raspberrypi systemd[1]: monit.service: Failed with result 'exit-code'.
Aug 11 23:47:19 raspberrypi systemd[1]: Failed to start LSB: service and resource monitoring daemon.
dpkg: error processing package monit (--configure):
installed monit package post-installation script subprocess returned error exit status 1
dpkg: dependency problems prevent configuration of openmediavault:
openmediavault depends on monit; however:
Package monit is not configured yet.
dpkg: error processing package openmediavault (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
monit
openmediavault
E: Sub-process /usr/bin/dpkg returned an error code (1)
failed installing postfix