Skript error...

[cejulius]

Pluggins

Skript
WildSkript
Umbaska
PirateSK
SkRayFall
SkQuery
Skellett

Chat error

Console Log

[19:40:52] [Server thread/INFO]: cejulius issued server command: /sk reload Bande
[19:40:52] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'sk' in plugin Skript v2.1.2
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:642) ~[spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1135) [spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:970) [spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_101]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_101]
at net.minecraft.server.v1_8_R3.SystemUtils.a(SystemUtils.java:19) [spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:718) [spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:367) [spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:657) [spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:560) [spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]
Caused by: java.lang.NoSuchMethodError: ch.njol.util.NonNullPair.getSecond()Ljava/lang/Object;
at ch.njol.skript.command.Commands.loadCommand(Commands.java:379) ~[?:?]
at ch.njol.skript.ScriptLoader.loadScript(ScriptLoader.java:462) ~[?:?]
at ch.njol.skript.ScriptLoader.loadScripts(ScriptLoader.java:262) ~[?:?]
at ch.njol.skript.SkriptCommand.onCommand(SkriptCommand.java:155) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot18.jar:git-Spigot-3ccbe77-a6a57a9]
... 15 more
[19:40:58] [Server thread/INFO]: cejulius issued server command: /pl
[19:41:01] [Craft Scheduler Thread - 1/INFO]: [Metrics] Connection timed out

Really need help ;D