Server closes right after opening

So, i just opened up a new creative world yesterday and added some mods. It was working fine up until right now. I just finished making a automatic farm and when i turned it on my server stopped, i tried turning it on again but when i joined it the server instantly stops.

The problems been fixed, i just downloaded the world and loaded it in minecraft without mods and imported it to the server, but no it just said the server closed