Server Crashed

My server crashed when I started it here is the crash log.

https://mclo.gs/UXEzNjg

It says it is vanilla but it is Forge 1.12.2

Well I added the mods before testing it

The world gen is also Biomes O' Plenty if that is the error

No it's not that I checked

Space0Flight.aternos.me this is the ip

Doing it

I've narrowed it down to these

AutoRegLib-1.3-32.jar

CraftStudioAPI-universal-1.0.1.95-mc1.12-alpha.jar

GalacticraftCore-1.12.2-4.0.2.280.jar

iChunUtil-1.12.2-7.2.2.jar

MicdoodleCore-1.12.2-4.0.2.280.jar

MJRLegendsLib-1.12.2-1.1.9.jar

I think the problem was this mod

It worked after this mod was removed but it was also the last mod left when I got rid of it

Well it just crashed when I added the galacticraft mods