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hi all, I enter this command "java -Xmx4096M -Xms4096M -jar forge-1.12.2- nogui" to start a forge server in 1.12.2(obviously without ""), but it gives me this problem:
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. <init> (Launch.java:34)
        at net.minecraft.launchwrapper.Launch.main (Launch.java:28)
        ... 6 blackberries

how can i solve? do I have to change something in the command?

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