HomePod stops after about 2 hours of play

My iPod keeps stopping after about a couple hours of play. I’ve read all the responses and none of them apply to me. I have Apple Music. I have 20 hours of playlist time and it seems it’s always around the two hour mark give or take 10 minutes is when it poses right after it starts a song. All I have to do is say hey Siri continue music and it keeps playing the same song. I have had my HomePod for four years now and it just started doing this about a month ago.