I've recently been getting a crash on a minecraft server using ICBM v5.0. The crash report is on the attached pastebin link but I'm currently unsure about whats actually happening and what i can do to fix it. The main error is as follows

Description: Exception in server tick loop
net.minecraftforge.fml.common.LoaderException: java.lang.ClassNotFoundException: icbm.classic.config.ConfigClient

The full crash report
https://pastebin.com/sZTJcY4b

The server is running OpenJDK 1.8.0 on Ubuntu 22.10

Hope to hear back soon about this!

Interesting, seems forge is trying to load the client side config. Will fix it here later as it should be easy enough.

Should be fixed in 5.1.0, curse might take a bit to process but once done link should work https://www.curseforge.com/minecraft/mc-mods/icbm-classic/files/4485952