max@max-Aspire-E5-571G:~/Bureau/Serveur FINAL !$ ./start
A problem occurred running the Server launcher.java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at cpw.mods.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:43)
	at cpw.mods.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:12)
Caused by: java.lang.ExceptionInInitializerError
	at org.apache.logging.log4j.util.PropertiesUtil.<init>(PropertiesUtil.java:71)
	at org.apache.logging.log4j.util.PropertiesUtil.<clinit>(PropertiesUtil.java:31)
	at org.apache.logging.log4j.status.StatusLogger.<clinit>(StatusLogger.java:48)
	at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:44)
	at net.minecraft.launchwrapper.LogWrapper.configureLogging(LogWrapper.java:14)
	at net.minecraft.launchwrapper.LogWrapper.log(LogWrapper.java:28)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:94)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	... 6 more
Caused by: java.lang.NullPointerException
	at org.apache.logging.log4j.util.ProviderUtil.<clinit>(ProviderUtil.java:70)
	... 14 more