Jibri.service: Failed with result 'start-limit-hit'

fresh installed jibri on fresh installed ubuntu 16.04 “start-limit-hit” throwed.
‘var/log/jitsi/jibri’ is empty

Jän 04 19:56:52 jibri systemd[1]: jibri.service: Control process exited, code=exited status=7
Jän 04 19:56:52 jibri systemd[1]: jibri.service: Main process exited, code=exited, status=143/n/a

Please help!