failed service start

[budgierless]

using ubuntu 18.04LTS
`:~# systemctl status BlockCountries.service
● BlockCountries.service - LSB: start and stop BlockCountries
Loaded: loaded (/etc/init.d/BlockCountries; generated)
Active: failed (Result: exit-code) since Tue 2019-07-23 18:45:16 BST; 2h 31min ago
Docs: man:systemd-sysv-generator(8)

Jul 23 18:45:02 mmg systemd[1]: Starting LSB: start and stop BlockCountries...
Jul 23 18:45:16 mmg BlockCountries[3980]: Can't return outside a subroutine at /etc/init.d/BlockCountries line 750.
Jul 23 18:45:16 mmg BlockCountries[3980]: /sbin/ip6tables: exit code 3
Jul 23 18:45:16 mmg systemd[1]: BlockCountries.service: Control process exited, code=exited status=3
Jul 23 18:45:16 mmg systemd[1]: BlockCountries.service: Failed with result 'exit-code'.
Jul 23 18:45:16 mmg systemd[1]: Failed to start LSB: start and stop BlockCountries.`