Fehler Meldung

<-- System-data -->
Version: 1.1.0
Serverversion: git-Spigot-6c9b0a1-de5c261 (MC: 1.8.8)
Time: 15:17:46
Installed Plugins: 12
|---|
PermissionsEx, Block-That-Command, PointsAPI, PerWorldChatPlus, Essentials, PerWorldTablist, EssentialsChat, Multiverse-Core, HoloAPI, Skywars, Lobby, SurvivalGames
|---|
<<<ERROR-MESSAGE>>>
java.lang.NullPointerException
	at me.BukkitPVP.Skywars.Game.updateSigns(Game.java:873)
	at me.BukkitPVP.Skywars.Game.isReady(Game.java:1068)
	at me.BukkitPVP.Skywars.Game.join(Game.java:87)
	at me.BukkitPVP.Skywars.Commands.JoinCMD.onCommand(JoinCMD.java:24)
	at me.BukkitPVP.Skywars.Commands.CommandHandler.onCommand(CommandHandler.java:120)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141)
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:640)
	at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1162)
	at net.minecraft.server.v1_8_R3.PlayerConnection.chat(PlayerConnection.java:1078)
	at org.bukkit.craftbukkit.v1_8_R3.entity.CraftPlayer.chat(CraftPlayer.java:237)
	at me.BukkitPVP.Skywars.Listener.InteractListener.onInteract(InteractListener.java:37)
	at sun.reflect.GeneratedMethodAccessor34.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:227)
	at net.minecraft.server.v1_8_R3.PlayerInteractManager.interact(PlayerInteractManager.java:463)
	at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:759)
	at net.minecraft.server.v1_8_R3.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:52)
	at net.minecraft.server.v1_8_R3.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:1)
	at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44)
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:714)
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374)
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:653)
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:556)
	at java.lang.Thread.run(Thread.java:745)