varnish – Hitch installation completed with insserv errors. Unable to start hitch

I am trying to install hitch to terminate the certificates for the Varnish reverse proxy on my Ubuntu 16.04 VPS. The installation completes with the following messages and Hitch service doesnt startup.

sridhar@SastraTechnologies:~$ sudo apt install hitch
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following package was automatically installed and is no longer required:
Use 'sudo apt autoremove' to remove it.
The following NEW packages will be installed:
0 upgraded, 1 newly installed, 0 to remove and 100 not upgraded.
Need to get 0 B/51.1 kB of archives.
After this operation, 163 kB of additional disk space will be used.
Selecting previously unselected package hitch.
(Reading database ... 249839 files and directories currently installed.)
Preparing to unpack .../hitch_1.1.1-1_amd64.deb ...
Unpacking hitch (1.1.1-1) ...
Processing triggers for systemd (229-4ubuntu21.27) ...
Processing triggers for ureadahead (0.100.0-19.1) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up hitch (1.1.1-1) ...
insserv: Script nagios is broken: incomplete LSB comment.
insserv: missing `Default-Start:'  entry: please add even if empty.
insserv: missing `Default-Stop:'   entry: please add even if empty.
insserv: Default-Start undefined, assuming empty start runlevel(s) for script `nagios'
insserv: Default-Stop  undefined, assuming empty stop  runlevel(s) for script `nagios'

Tried removing the packahe updating the repository and installing it again but the results are the same. Is there anything that I can do to resolve the insserv messages?