Startup Issue with Minecraft - Java Runtime Environment error when starting Minecraft server

Technical Support
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1

System Information

Field Value
Operating System Linux - Debian GNU/Linux 13 on x86_64
Product AMP ‘Deimos’ v2.7.0.0 (Mainline)
Virtualization Docker
Application Minecraft
Module MinecraftModule
Running in Container Yes
Current State Failed

Problem Description

Issue

When I attempt to start an instance of Minecraft, I receive the following error:

Error: LinkageError occurred while loading main class net.minecraft.bundler.Main
java.lang.UnsupportedClassVersionError: net/minecraft/bundler/Main has been compiled by a more recent version of the Java Runtime (class file version 69.0), this version of the Java Runtime only recognizes class file versions up to 65.0

Reproduction Steps

  • updated minecraft server to latest version
  • started server
  • Tried to update the AMP software
1 Like
2

Same. No changes to the server recently but noticed we couldn’t connect today.

3

Same, fails to start after Minecraft was updated. “Error: LinkageError occurred while loading main class net.minecraft.bundler.Main
java.lang.UnsupportedClassVersionError: net/minecraft/bundler/Main has been compiled by a more recent version of the Java Runtime (class file version 69.0), this version of the Java Runtime only recognizes class file versions up to 65.0“

4

Wrong java version selected. Make sure a newer version is selected in AMP.