Startup Issue with Minecraft - changed to forgemod and install but says forgemod is missing

System Information

Field Value
Operating System Linux - Debian GNU/Linux 13 on x86_64
Product AMP ‘Proteus’ v2.8.0.4 (Mainline)
Virtualization Docker
Application Minecraft
Module MinecraftModule
Running in Container Yes
Current State Failed

Problem Description

Issue

I am trying to put Sunlit society cobblemon on and everytime i have tried it says something is missing or we load in to a world covered in water and signs.

Reproduction Steps

  • made server
  • changed to forge and the correct version for Sunlit:society to run
  • updated and started

How did you install the modpack? Using the Store? Did you follow the Modded Minecraft Guide?