My server stopped even though a player was online.

Yesterday, I had left my account to AFK in my farm but in the morning, I saw that my server was closed. When I checked the log, it showed “ThreadedChunkAnvilStorage” a few times before stopping the server. Usually it shows saving before stopping but it showed “ThreadedChunkAnvilStorage” instead of that. Aternos servers do not close when a player is online and there was no message of the player leaving also in the log. Can someone help me with this problem??

okay..........rip my farm
But it won’t stop if we are playing normally I guess

ok thanks