Icinga Backend stops

My Icinga Node stops (the monitoring-backend icinga" doesnt run)…

no one made a change on the Linux VM…

ive only removed a host insight the Director…
and after the remove was done… the node stops…

th LVM partition isnt full.

Icinga v2.7.3
Director: 1.7.2
PHP 7.0.33
ubuntu x64

''root@smon03:/var/log/icinga2# service icinga2 status
● icinga2.service - Icinga host/service/network monitoring system
Loaded: loaded (/lib/systemd/system/icinga2.service; enabled; vendor preset: enabled)
Drop-In: /etc/systemd/system/icinga2.service.d
└─limits.conf
Active: failed (Result: exit-code) since Wed 2019-12-18 16:15:45 CET; 9min ago
Process: 3345 ExecStart=/usr/sbin/icinga2 daemon --close-stdio -e ${ICINGA2_ERROR_LOG} (code=exited, status=139)
Process: 3335 ExecStartPre=/usr/lib/icinga2/prepare-dirs /etc/default/icinga2 (code=exited, status=0/SUCCESS)
Main PID: 3345 (code=exited, status=139)

Dec 18 16:15:45 smon03 icinga2[3345]: [2019-12-18 16:15:45 +0100] information/ConfigItem: Instantiated 5 TimePeriods.
Dec 18 16:15:45 smon03 icinga2[3345]: [2019-12-18 16:15:45 +0100] information/ConfigItem: Instantiated 4 Users.
Dec 18 16:15:45 smon03 icinga2[3345]: [2019-12-18 16:15:45 +0100] information/ConfigItem: Instantiated 3190 Services.
Dec 18 16:15:45 smon03 icinga2[3345]: [2019-12-18 16:15:45 +0100] information/ConfigItem: Instantiated 5 ServiceGroups.
Dec 18 16:15:45 smon03 icinga2[3345]: [2019-12-18 16:15:45 +0100] information/ScriptGlobal: Dumping variables to file ‘/var/cache/icinga2/icinga2.vars’
Dec 18 16:15:45 smon03 icinga2[3345]: [2019-12-18 16:15:45 +0100] information/cli: Closing console log.
Dec 18 16:15:45 smon03 systemd[1]: Started Icinga host/service/network monitoring system.
Dec 18 16:15:45 smon03 systemd[1]: icinga2.service: Main process exited, code=exited, status=139/n/a
Dec 18 16:15:45 smon03 systemd[1]: icinga2.service: Unit entered failed state.
Dec 18 16:15:45 smon03 systemd[1]: icinga2.service: Failed with result ‘exit-code’.
root@smon03:/var/log/icinga2#
‘’

ive tested some thing…

after i’ve opened the sql connect and make a sql query the backend was running fine again…

strange issue.

ive think that the backend got a connection lost to the local icinga2 DB…

could this be or was this just luck ???