I tried to run the game as explained here...


But got this error:

# java -Xmx1024M -Xms1024M -jar server.jar  nogui
Error: LinkageError occurred while loading main class net.minecraft.server.Main
        java.lang.UnsupportedClassVersionError: net/minecraft/server/Main has been compiled by a more recent version of the Java Runtime (class file version 60.0), this version of the Java Runtime only recognizes class file versions up to 55.0

I installed JDK using:

apt install openjdk-11-jdk-headless

I am using ARM Ubuntu EC2 instance.


Managed to install Java. But getting a different error this time :)

[04:40:16] [Server thread/INFO]: Starting minecraft server version 1.17.1
[04:40:16] [Server thread/INFO]: Loading properties
[04:40:16] [Server thread/INFO]: Default game type: SURVIVAL
[04:40:16] [Server thread/INFO]: Generating keypair
[04:40:16] [Server thread/INFO]: Starting Minecraft server on
[04:40:16] [Server thread/INFO]: Using default channel type
[04:40:16] [Server thread/WARN]: **** FAILED TO BIND TO PORT!
[04:40:16] [Server thread/WARN]: The exception was: java.net.BindException: Cannot assign requested address
[04:40:16] [Server thread/WARN]: Perhaps a server is already running on that port?
[04:40:16] [Server thread/INFO]: Stopping server
[04:40:16] [Server thread/INFO]: Saving worlds
[04:40:16] [Server thread/ERROR]: Exception stopping the server
java.lang.NullPointerException: Cannot invoke "abr.o_()" because "☃" is null
        at net.minecraft.server.MinecraftServer.a(SourceFile:588) ~[server.jar:?]
        at net.minecraft.server.MinecraftServer.u(SourceFile:624) ~[server.jar:?]
        at aas.u(SourceFile:585) ~[server.jar:?]
        at net.minecraft.server.MinecraftServer.x(SourceFile:734) ~[server.jar:?]
        at net.minecraft.server.MinecraftServer.a(SourceFile:270) ~[server.jar:?]
        at java.lang.Thread.run(Thread.java:831) [?:?]


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