some shows are showing "video not available" while others work fine

Just subscribed to Apple TV + and loaded the channel on my Roku some shows are playing fine while others (including the Apple TV+ original series "The Morning Show" with Jennifer Aniston pop up with a "Video Not Available" error message, along with this: "There is a problem loading this video, if this continues check your internet connection," and two buttons: "OK," and "Try Again." There is obviously no internet connection problem because other Apple TV + videos, including other original series and movies, are playing fine.