can't add repo

**can’t install nutty **
parrot 4.5 x64
ho guys i’m tring to run excute this command
sudo apt-add-repository ppa:bablu-boy/nutty.0.1
but i get this error
Traceback (most recent call last):
File “/usr/bin/apt-add-repository”, line 95, in
sp = SoftwareProperties(options=options)
File “/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py”, line 109, in init
self.reload_sourceslist()
File “/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py”, line 599, in reload_sourceslist
self.distro.get_sources(self.sourceslist)
File “/usr/lib/python3/dist-packages/aptsources/distro.py”, line 93, in get_sources
(self.id, self.codename))
aptsources.distro.NoDistroTemplateException: Error: could not find a distribution template for Parrot/n/a

We don’t recommend nor support in any way, adding third party repositories for both technical and security related issues.

Here that s1udge.
However, as a sailor I really want to put OpenCpn on my laptop (Parrot of course) for navigation purposes.
So, even though Parrot does not recommend or support, in any way whatsoever. I am willing to take responsibility for my actions.

That being said, How would one add a Ubuntu repository to Parrot?
Thank you in advance.
btw: ppa:opencpn/opencpn