OpenNebula is not running or there was a server exception. Please check the server logs. please help

Please, describe the problem here and provide additional information below (if applicable) …
latest nebula from a few days ago
did some work, some imports, everything was fine
came by a few ours, started the system and boom : "OpenNebula is not running or there was a server exception. Please check the server logs. "

this is what comes out from status command

[root@console ~]# service opennebula status
Redirecting to /bin/systemctl status opennebula.service
● opennebula.service - OpenNebula Cloud Controller Daemon
Loaded: loaded (/usr/lib/systemd/system/opennebula.service; enabled; vendor p reset: disabled)
Active: failed (Result: exit-code) since Wed 2019-06-26 18:03:36 IDT; 17s ago
Process: 13701 ExecStopPost=/usr/share/one/follower_cleanup (code=exited, stat us=0/SUCCESS)
Process: 13697 ExecStopPost=/bin/rm -f /var/lock/one/one (code=exited, status= 0/SUCCESS)
Process: 13694 ExecStop=/bin/kill -TERM $MAINPID (code=exited, status=1/FAILUR E)
Process: 13688 ExecStart=/usr/bin/oned -f (code=exited, status=0/SUCCESS)
Process: 13684 ExecStartPre=/usr/sbin/logrotate -s /tmp/logrotate.state -f /et c/logrotate.d/opennebula (code=exited, status=0/SUCCESS)
Process: 13681 ExecStartPre=/bin/chown oneadmin:oneadmin /var/log/one (code=ex ited, status=0/SUCCESS)
Process: 13679 ExecStartPre=/bin/mkdir -p /var/log/one (code=exited, status=0/ SUCCESS)
Main PID: 13688 (code=exited, status=0/SUCCESS)

Jun 26 18:03:36 console.meshipc.co.il systemd[1]: Starting OpenNebula Cloud C…
Jun 26 18:03:36 console.meshipc.co.il systemd[1]: Started OpenNebula Cloud Co…
Jun 26 18:03:36 console.meshipc.co.il systemd[1]: opennebula.service: control…
Jun 26 18:03:36 console.meshipc.co.il systemd[1]: Stopped OpenNebula Cloud Co…
Jun 26 18:03:36 console.meshipc.co.il systemd[1]: Unit opennebula.service ent…
Jun 26 18:03:36 console.meshipc.co.il systemd[1]: opennebula.service failed.
Hint: Some lines were ellipsized, use -l to show in full.

i’m not sure where to look or what’s wrong. i’ve read some stuff and all sort of ideas but so far no go.
thank you


Versions of the related components and OS (frontend, hypervisors, VMs):

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