DVR EPG Update Fails

today Im seeing the following error when trying to update EPG data.

Jun 06, 2019 09:08:41.631 [4548] ERROR - EPG: received HTTP response of 404 from request to https://tmsapi.plex.tv/v1.1/lineups/USA-IN66549-X/grid?api_key=xxx&endDateTime=2019-06-07T00%3A00Z&imageSize=Ms&imageText=false&startDateTime=2019-06-06T18%3A00Z

I only have a few hours of guide data and what data I do have I see dates instead of season/episode numbers.