Friend can’t enter my caves PS4

I've been having this issue too, but while me and another one of my friends can't go into caves unless we host (we get a loading screen for a little bit and then will get a message saying we've lost connection to the server), I have another friend who can go into caves on the same world we can't. Hope this helps

After the new update adding the compendium, I'm glad to say that I can go in caves now! The Ancient Fuelweaver won't know what hit him