Favorite SERIES page has disappeared

Some time in the last couple of weeks, the favorite TV shows have disappeared from the stream website, as well as the Android stream app.

The favorites page at https://www.xfinity.com/stream/favorites has a link to movies (https://www.xfinity.com/stream/favorites/movie ), but not series.

When I get to the series page, I can still star or unstar a show.

If I'm not mistaken, the favorite TV series were at https://www.xfinity.com/stream/favorites/tv but when I visit that page, I get this error message:

Well that didn’t go as planned...

Please try again in a few minutes. Haven’t added any yet? Start by selecting "Add to Favorites" on the Info screen of any show, movie or team.

Has something changed to disable this for everybody, or is it only a problem my account?