Trying to set up a Stoneblock Server. Samer Error keeps occuring.

[SHOCKWAVE4890]

I have been trying to set up a stone block 2 server for me and some friends to play on however whenever I try and run the start.bat file after using the installer it gives me this same error.

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:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
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 more
Press any key to continue . . .

I have tried solutions that have worked for things likethis before like updating my java version but this same error keeps appearing and I was wondering if anyone knows how to fix this.

 

[gdharron]

what java version are you using and what update? also a full log via paste bin would help!

 

[SHOCKWAVE4890]

It’s all good now I managed to fix it by going back to an older version of Java.