Minecraft Eternal Modpack Server won't start

[Exced]

C:\Users\Exced\Desktop\Eternal (ServerPack 1.3.7)>java -Xms4G -Xmx6G -XX:PermSize=256m -Dfml.read.Timeout=560 -jar forge-1.12.2-14.23.5.2847-universal.jar nogui Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option PermSize; support was removed in 8.0 A problem occurred running the Server launcher.java.lang.reflect.InvocationTargetException at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:564) at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:70) at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:34) Caused by: java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader 'bootstrap') at net.minecraft.launchwrapper.Launch.(Launch.java:34) at net.minecraft.launchwrapper.Launch.main(Launch.java:28) ... 6 more

C:\Users\Exced\Desktop\Eternal (ServerPack 1.3.7)>pause Premere un tasto per continuare . . .

I read more post about this problem, but i saw forge server wont start with a java version above 8.

But i already have java 8 64 bit. Also this is the code inside the bat file

java -Xms8G -Xmx8G -XX:PermSize=256m -Dfml.read.Timeout=560 -jar forge-1.12.2-14.23.5.2847-universal.jar nogui pause

Can anyone help?

Also i tried with jarfix but doesnt work neither.

Edited January 27, 2021 by Exced