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forgeserver.jar not opening

Kardy

By Kardy
in Support & Bug Reports

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Kardy Tree Puncher

Kardy

Posted
Posted

I have been trying for 3 hours now to create a modded minecraft server and I have followed countless youtube videos however it seems to go wrong at the same point every time.

whenever i try to run the forgeserver.jar file nothing happens and when i try to run it through a run.bat file it opens the command prompt then throws errors at me this is what it says if it helps at all

one final thing i tried making a vanilla server and I got it working in 10 minutes so i dont know what the problem is, if anyone can help i would be so thankful :)

C:\Users\ryanm\Desktop\valserver>java -Xmx4096M -Xms4096M -jar forgeserver.jar nogui
2021-06-21 15:39:17,097 main WARN Advanced terminal features are not available in this environment
[15:39:17] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 36.1.0, --fml.mcpVersion, 20210115.111550, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge, nogui]
[15:39:17] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 8.0.9+86+master.3cf110c starting: java version 16.0.1 by Oracle Corporation
Exception in thread "main" java.lang.IllegalAccessError: class cpw.mods.modlauncher.SecureJarHandler (in unnamed module @0xca263c2) cannot access class sun.security.util.ManifestEntryVerifier (in module java.base) because module java.base does not export sun.security.util to unnamed module @0xca263c2
        at cpw.mods.modlauncher.SecureJarHandler.lambda$static$1(SecureJarHandler.java:41)
        at cpw.mods.modlauncher.api.LamdbaExceptionUtils.uncheck(LamdbaExceptionUtils.java:95)
        at cpw.mods.modlauncher.SecureJarHandler.<clinit>(SecureJarHandler.java:41)
        at cpw.mods.modlauncher.Launcher.lambda$new$6(Launcher.java:55)
        at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)
        at cpw.mods.modlauncher.api.TypesafeMap.computeIfAbsent(TypesafeMap.java:52)
        at cpw.mods.modlauncher.api.TypesafeMap.computeIfAbsent(TypesafeMap.java:47)
        at cpw.mods.modlauncher.Environment.computePropertyIfAbsent(Environment.java:62)
        at cpw.mods.modlauncher.Launcher.<init>(Launcher.java:55)
        at cpw.mods.modlauncher.Launcher.main(Launcher.java:66)
        at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63)
        at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60)
        at net.minecraftforge.server.ServerMain.main(ServerMain.java:57)

C:\Users\ryanm\Desktop\valserver>PAUSE
Press any key to continue . . .

DaemonUmbra Reality Controller

DaemonUmbra

Posted
Posted

1.16 is not currently supported, use Java 8-15

This is my Forum Signature, I am currently attempting to transform it into a small guide for fixing easier issues using spoiler blocks to keep things tidy.

 

As the most common issue I feel I should put this outside the main bulk:

The only official source for Forge is https://files.minecraftforge.net, and the only site I trust for getting mods is CurseForge.

If you use any site other than these, please take a look at the StopModReposts project and install their browser extension, I would also advise running a virus scan.

 

For players asking for assistance with Forge please expand the spoiler below and read the appropriate section(s) in its/their entirety.

  Reveal hidden contents

 

Kardy Tree Puncher

Kardy

Posted
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Posted

so I need to use java 15 does that mean i can only use minecraft versions 1.15 and below or how does it work? because my modpack is 1.16 is there any way for me to play with it or is it broken right now

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