Alethebomb3r

hi all, I enter this command "java -Xmx4096M -Xms4096M -jar forge-1.12.2-14.23.5.2854.jar 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?