Minecraft Bukkit Server Hatası YARDIM LÜTFEN

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java.lang.ExceptionInInitializerError
at org.apache.logging.log4j.util.PropertiesUtil.<init>(PropertiesUtil.ja
va:71)
at org.apache.logging.log4j.util.PropertiesUtil.<clinit>(PropertiesUtil.
java:31)
at org.apache.logging.log4j.status.StatusLogger.<clinit>(StatusLogger.ja
va:48)
at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:44)
at net.minecraft.server.v1_7_R1.MinecraftServer.<clinit>(MinecraftServer
.java:46)
at org.bukkit.craftbukkit.Main.main(Main.java:159)
Caused by: java.lang.NullPointerException
at org.apache.logging.log4j.util.ProviderUtil.<clinit>(ProviderUtil.java
:70)
... 6 more
Devam etmek için bir tuşa basın . . .
HATASI VERİYOR YARDIM EDİİN!!!!