I'm just going to throw this out there, but Oasis shouldn't be an op on heal's server.
Literally all I have seen him do is threaten people with bans/disconnects for even going near his creations, let alone (god forbid) while holding a pickaxe, and spawning materials to make his own things.
Also your server's current map is really forgeted up, lots of those raised chunks happening all over the place.