I've no idea. I just noticed this morning that there were a few gaps in my EPG, so went into TV Server Configuration to do a manual update as that usually fixes it and that was when I got the error message. The scheduled update on 31/12/2017 worked perfectly, so something has changed this morning.
View attachment 195066
On this screen it shows the EPG Background Audio stream as "1 - Not Running", all the others have a status of "4 - Running".
Unsure what could have changed within the plugin as there has been no update to it. This seems to be an issue at sky's end maybe?