Startup Issue with Minecraft - FTB Direwolf20 1.20 fails to start

Technical Support
, ,
1

System Information

Field Value
Operating System Linux - Debian GNU/Linux 12 on x86_64
Product AMP ‘Callisto’ v2.5.0.12 (Mainline)
Virtualization Docker
Application Minecraft
Module MinecraftModule
Running in Container Yes
Current State Failed

Problem Description

Issue

The server crashes with pop up “The update manager reported a successful update, but ./Minecraft/minecraft_server.jar is missing.”
If I choose the .jar that is located in the files it loads plain vanila.

Reproduction Steps

  • Create instance
  • Chose server type Feed The Beast (New Source)
  • Chose FTB Modpack: FTB Presents Direwolf20 1.20 (v1.12.1)
  • Leave Server JAR to autoselect
  • update and start
2

You’ll need to swap the server type over to NeoForge and set the right version.
The modpack downloader can’t do it automatically at this time