malurio

My school team was working to recreate the campus in minecraft for about 2 weeks, and a lot of effort was put into it. Yesterday was also like the usual, building a lot before everybody went off to sleep and the server hibernated. However, when I logged on to minehut today to start the server, I realized that every single file was gone. When I went to file manager, there was no folder but "plugins" - everything was gone! It's missing the core files, so I can't even boot the server (though it doesn't even matter, the builds are what are important and it's gone). I've heard of progress of a few hours or so being last due to forgetting /save before you quit, but what is this? The whole server getting wiped out? Is this just a temporary glitch? Even if it's not, is there a way we can recover the files? Thank you in advance.