Did you also apt-get upgrade when you were going through those steps?
I’m inclined to think the issue is unrelated to mineos-node, since the error you’re getting is (I’m pretty sure) a cherrypy issue; something mineos-node didn’t touch.
If you type in:
apt-cache policy python-cherrypy3
(Edit cherrpy3 not 2)
I suspect you’ll see your cherrypy upgraded past 3.2, which breaks ssl
This is a known issue with cherrypy and is noted in this mineos post: [SOLVED] SSL Connection Error - Ubuntu 14.04 to 14.10 upgrade
While I’m pretty confident that both webuis could both be on the same server, I really recommend using completely different, isolated vms to test development builds. No need to put to risk production servers with prerelease software…