So, me and my friend just started a new survival world together using a Minehut server. We played for about 5 hours on it and I logged out because I had things to do. He stayed on and logged out about 30 mins later. I came back an hour from logging out and turned on the server. When I joined, I was in a new world, with no items or anything. My friend tried logging in and it was the same. I don't know why this has happened. Please help.