How to resolve conflicting distributions in apt-get

When doing an apt-get update/upgrade I see that warning

W: Conflicting distribution: https://downloads.plex.tv/repo/deb public InRelease (expected public but got )

I was upgrading to Ubuntu Zesty 17.04 before and do not know how to fix the above. Already have seen https://forums.plex.tv/discussion/162337/plex-media-server-ppa-for-ubuntu/p4? but there are no suggested fixes for that.

Maybe one of you can give some hints? Thanks!

I encountered the same problem on Ubuntu 18.04 (Bionic). I fixed the problem by deleting the file plexmedeaserver.list from /etc/apt/sources.list.d/.

Am guessing these are appended to the main sources.list when you execute apt-get update. If I ever need to update Plex, I can manually add the update source to get that done.