Sorry for the double reply.
Check if you're subscribed to any of those communities: !technology@lemmy.world , !comicstrips@lemmy.world or !memes@lemmy.world. If you are, try to unsubscribe and see if your front page works again. For me it did the trick.
!fediverse@lemmy.world was also giving me problems, but apparently it's fine now, so odds are that the problem will eventually go away on its own.
Thank you!