If you think Lemmy is a bit too quiet today, that’s probably why.
Federation is broken: https://sh.itjust.works/?dataType=Post&listingType=All&page=1&sort=New
There is also a site-wide error preventing connected users from displaying comments.
You can join the Matrix space in the instance sidebar to have a look. Basically, it’s a storage issue, but the admins have to investigate (I’m pretty sure they are still asleep as of now)