THANK YOU, I have always used `apt dist-upgrade`, but still ran into this error message. Netdata was the culprit for me as well, appreciate the info and fix!
Show output for that 80netdata file with: cat /etc/apt/preferences.d/80netdata
You are probably going to find it has a line with Priority: in it which needs to be changed to Pin-Priority: , as shown here in the apt_preferences manpage.
I've...