Error start slurmmon service

[patrick-douglas]

Hello,
I'm trying install slurmmon on Linux Mint 18.3
I sucssfully installed the RPMs but I'm getting an error when I try to start slurmmon service:

Job for slurmmond.service failed because the control process exited with error code. See "systemctl status slurmmond.service" and "journalctl -xe" for details.

And the "journalctl -xe output is:

-- Unit slurmmond.service has begun starting up.
Nov 29 09:42:18 master.lbn.com sudo[1745]:     root : TTY=unknown ; PWD=/ ; USER=slurmmon ; COMMAND=/usr/bin/python /
Nov 29 09:42:18 master.lbn.com sudo[1745]: pam_unix(sudo:session): session opened for user slurmmon by (uid=0)
Nov 29 09:42:18 master.lbn.com slurmmond[1732]: Starting slurmmond... Traceback (most recent call last):
Nov 29 09:42:18 master.lbn.com slurmmond[1732]:   File "/usr/sbin/slurmmond", line 142, in <module>
Nov 29 09:42:18 master.lbn.com slurmmond[1732]:     import slurmmon
Nov 29 09:42:18 master.lbn.com slurmmond[1732]: ImportError: No module named slurmmon
Nov 29 09:42:18 master.lbn.com sudo[1745]: pam_unix(sudo:session): session closed for user slurmmon
Nov 29 09:42:18 master.lbn.com slurmmond[1732]: *** FAILED ***
Nov 29 09:42:18 master.lbn.com systemd[1]: slurmmond.service: Control process exited, code=exited status=1
Nov 29 09:42:18 master.lbn.com systemd[1]: Failed to start SYSV: slurmmond - gather data about SLURM behavior.
-- Subject: Unit slurmmond.service has failed

Hoe to fix this ?
Thanks