1.16.5 server side

[XakepSDK]

Can't launch on a server, i'm getting this error

[15:38:49] [modloading-worker-0/ERROR] [ne.mi.ev.EventSubclassTransformer/EVENTBUS]: Could not find parent net/minecraft/client/particle/DeceleratingParticle for class com/teammetallurgy/atum/client/particle/NebuFlameParticle in classloader cpw.mods.modlauncher.TransformingClassLoader@301aa982 on thread Thread[modloading-worker-0,5,main]
[15:38:49] [modloading-worker-0/ERROR] [ne.mi.ev.EventSubclassTransformer/EVENTBUS]: An error occurred building event handler
java.lang.ClassNotFoundException: net.minecraft.client.particle.DeceleratingParticle

This issue fixed

[XakepSDK]

[16:11:19] [modloading-worker-1/ERROR] [ne.mi.fm.ja.FMLModContainer/LOADING]: Failed to register automatic subscribers. ModID: atum, class com.teammetallurgy.atum.Atum
java.lang.NoClassDefFoundError: com/mojang/blaze3d/matrix/MatrixStack

Probably this class is the cause?
https://github.com/TeamMetallurgy/Atum2/blob/master/src/main/java/com/teammetallurgy/atum/client/model/armor/AtemArmorModel.java

Might be forge bug, tested with forge 36.0.4

[GirafiStudios]

Funny enough I've just tracked it down as of 5 minutes ago, after quite a few hours.
It's caused by some of the Curios support we have, so I'll work on fixing that.