Server Closes When I Die

Hello, This is one of my first times using aternos. I recently made a server for me and my friends, Its modded with origins mod and the addition of the slime origin mod. But only a minute after starting it i died, Instantly afterwards the server closed. I reopened it thinking maybe it was just a glitch, But a few minutes later my friend died, Then the same happened. I wanted to know why this happens and maybe how to fix it. Thanks.