I am using Debian 9 as my OS.
root@mail:~# systemctl enable jira.service
jira.service is not a native service, redirecting to systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable jira
insserv: warning: script 'K01jira' missing LSB tags and overrides
insserv: warning: script 'jira' missing LSB tags and overrides
update-rc.d: error: jira Default-Start contains no runlevels, aborting.
Would you please help me to fix this problem?