minecraft@server:~/LocalServer$ java -Xms3G -Xmx3G -jar forge-1.10.2-12.18.1.2037-universal.jar nogui
Exception in thread "main" java.lang.NoClassDefFoundError: joptsimple/OptionSpec
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:44)
        at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:31)
Caused by: java.lang.ClassNotFoundException: joptsimple.OptionSpec
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 4 more