Just ran into the same thing on piefed.zip. Happened (still happening) on both PC running browser and iOS app.

It worked fine when I received the last notification 10 hours ago, I don’t think piefed.zip changed their software between then and now.

There are 2 new replies to my post which caused the notification, I can see in developer tools the replies loaded and the json response looked okay at a first glance. Not familiar enough with piefed api to know what the “list” call that got a 404 is for or whether that is a problem.

I believe that is a piece of Star Fruit.