Crash on Server

[toliner]

Crash on server caused by java.lang.NoClassDefFoundError.
It seems to require client class.

CrashReport

[heiyingxp]

i got the same crash on my server , @Hakameda
crash-2018-07-24_10.15.55-server.txt

[heiyingxp]

i fix it with edit this files in pic1
and add
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
to pic2
and add
@SideOnly(Side.CLIENT)
to pic3