So, I can confirm this is happening to me too (Librewolf and Chromium).

I was looking into some analytics, and Lemmy.world data wasn’t being grabbed, so went to the site to see if it was down. The frontend is up, but the nodes (https://lemmy.world/nodeinfo/2.1 , https://lemmy.world/api/v3/site) are down (Error 503) and their “DataDog” shows a number of their services are down.

I don’t ever use lemmy.world, but if the problem just started, I would assume the issue is related to the down services (not a problem for me on lemmy.zip or piefed.zip).

Edit: issue seems to have resolved for me. Their “datadog” shows all, but 1 alert gone (previously like 12 alerts).