Tautulli - Cannot Update - "Problem with SSL CA cert"

Can I get some help with this issue:

Ubuntu 16.04

If I try to update, or even pull down the latest build myself, I get this message:

fatal: unable to access ‘https://github.com/Tautulli/Tautulli.git/’: Problem with the SSL CA cert (path? access rights?)

Any idea how to correct this?

Dev is monitoring this thread:

https://forums.plex.tv/discussion/307821