System Information
| Field | Value |
|---|---|
| Operating System | Linux - Debian GNU/Linux 11 on x86_64 |
| Product | AMP ‘Callisto’ v2.5.0.14 (Mainline) |
| Virtualization | QEMU_KVM |
| Application | Minecraft |
| Module | MinecraftModule |
| Running in Container | No |
| Current State | Failed |
Problem Description
Issue
I updated my server from 1.20 paper to 1.21 paper. Ever since then it won’t let me start the server. The error I get from the console is the following
Exception in thread “ServerMain” java.lang.UnsupportedClassVersionError: org/bukkit/craftbukkit/Main has been compiled by a more recent version of the Java Runtime (class file version 65.0), this version of the Java Runtime only recognizes class file versions up to 61.0
Reproduction Steps
- Start Server
- Wait a few seconds
- Server says can’t start server