Startup Issue with Minecraft - Forge older then 1.20.3 will not install

System Information

Field Value
Operating System Linux - Debian GNU/Linux 12 on x86_64
Product AMP ‘Decadeus’ v2.4.7.0 (Mainline)
Virtualization Docker
Application Minecraft
Module MinecraftModule
Running in Container Yes
Current State Failed

Problem Description

Issue

Can not install older Forge then 1.20.3 (1.20.3 and 1.20.4 works fine).
No older Forge then 1.20.3 installs, I have tried a few by random. I need a specific version for a mod.

Reproduction Steps

  • Configuration > Server settings
  • Choose “Forge”
  • Choose “48.1 (1.20.2)”
  • Start server , server complains “The update manager reported a successful update, but ./Minecraft/ForgeMod.jar is missing.”
  • If preseing “Start server” again, it tries ones more to install the server without sucess.

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