Problem creating a modded minecraft server

OS Name/Version: linux ubuntu server

Product Name/Version: amp release phobos

Problem Description:

Hello to anyone reading i am currently trying to setup a minecraft java server with the modpack Gregtech new horizons when i try running the server after i drop the server files in i get this error i provided below this output is from the amp console i asked around in the discord server of the people that made this modpack and they said to me that i had to open up java9args.txt file and copy paste the arguments into the server i did that and it didnt seem to do anything can someone help me with this

A problem occurred running the Server launcher.java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:118)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at me.eigenraven.lwjgl3ify.rfb.entry.ServerMain.run(ServerMain.java:37)
	at me.eigenraven.lwjgl3ify.rfb.entry.ServerMain.main(ServerMain.java:12)
Caused by: java.lang.IllegalStateException: System classloader not overwritten, add -Djava.system.class.loader=com.gtnewhorizons.retrofuturabootstrap.RfbSystemClassLoader to your JVM flags
	at com.gtnewhorizons.retrofuturabootstrap.Main.main(Main.java:140)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	... 3 more

Steps to reproduce:

  • Step 1 start the server
  • Step 2 wait 5 seconds
  • Step 3 and crashes

Actions taken to resolve so far: added java tags to the server but no effect

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