Problem with Live TV

It seems more often lately, that when I go to Live TV and select All Listings, that I get a blank screen with the message that "We didnt find a match". It suggests I adjust my filters, but since I have none selected, I am expecting to see all channels. My other option is selecting HD as my filter, but I get blank for that too.

Shep_1 about Xfinity Stream, v4.2.1