I have downloaded all the required files used jre8 update 311 and used the run.bat ("C:\Program Files\Java\bin\java.exe" -Xmx4096M -Xms4096M -jar forge-1.12.2-14.23.5.2855.jar nogui) but i cannot launch the server with forge.jar only with the server.jar. i have followed other forums that have helped others but none have worked for me.. any help would be appreciated. 

 

Edited November 29, 20213 yr by thek1llerx
forgotten details

C:\Users\theki\Desktop\server>java -Xmx4096M -Xms4096M -jar forge-1.12.2-14.23.5.2855.jar nogui
A problem occurred running the Server launcher.java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:70)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:34)
Caused by: java.lang.NoClassDefFoundError: org/apache/logging/log4j/Level
        at net.minecraft.launchwrapper.Launch.launch(Launch.java:94)
        at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
        ... 6 more
Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.Level
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        ... 8 more

this is the error i get