Startup Issue with Minecraft - FTB Direwolf20 1.20 fails to start

[Fabien_Guillebot]

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

[ThePotatoKing]

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

Forge Frequently Asked Questions

Forge Frequently Asked Questions How do I run Forge using: start.sh/start.bat? No need! AMP handles all that for you. Just select the version of Forge you’ll need, hit update, and start your server. Where do I put custom start up arguments? You can find this options under: Configuration → Java and Memory → Additional java options I installed a modpack using AMP’s FTB downloader, why did it start in Vanilla? or The update manager reported a successful update, but ./Minecraft/minecraft_server.j…