What is this for an error?

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You are probably passing the relevant syntaxes something that isn't set
Okay... I don't understand xd Sorry
[doublepost=1504803458,1504803329][/doublepost]
You are probably passing the relevant syntaxes something that isn't set
And i have an new error:
code_language.skript:
[18:25:52] [Server thread/ERROR]: #!#!
[18:25:52] [Server thread/ERROR]: #!#! [Skript] Severe Error:
[18:25:52] [Server thread/ERROR]: #!#!
[18:25:52] [Server thread/ERROR]: #!#! If you're developing an add-on for Skript this likely means that you have done something wrong.
[18:25:52] [Server thread/ERROR]: #!#! If you're a server admin however please go to https://github.com/bensku/Skript/issues/
[18:25:52] [Server thread/ERROR]: #!#! and check whether this error has already been reported.
[18:25:52] [Server thread/ERROR]: #!#! If not please create a new ticket with a meaningful title, copy & paste this whole error into it (or use paste service),
[18:25:52] [Server thread/ERROR]: #!#! and describe what you did before it happened and/or what you think caused the error.
[18:25:52] [Server thread/ERROR]: #!#! If you think that it's a trigger that's causing the error please post the trigger as well.
[18:25:52] [Server thread/ERROR]: #!#! By following this guide fixing the error should be easy and done fast.
[18:25:52] [Server thread/ERROR]: #!#!
[18:25:52] [Server thread/ERROR]: #!#! Stack trace:
[18:25:52] [Server thread/ERROR]: #!#! java.lang.NullPointerException
[18:25:52] [Server thread/ERROR]: #!#!     at net.rayfall.eyesniper2.skRayFall.V1_8_4.EffTitleV1_8_4.execute(EffTitleV1_8_4.java:53)
[18:25:52] [Server thread/ERROR]: #!#!     at ch.njol.skript.lang.Effect.run(Effect.java:54)
[18:25:52] [Server thread/ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:65)
[18:25:52] [Server thread/ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:93)
[18:25:52] [Server thread/ERROR]: #!#!     at ch.njol.skript.lang.Trigger.execute(Trigger.java:53)
[18:25:52] [Server thread/ERROR]: #!#!     at ch.njol.skript.SkriptEventHandler.check(SkriptEventHandler.java:152)
[18:25:52] [Server thread/ERROR]: #!#!     at ch.njol.skript.SkriptEventHandler$1.execute(SkriptEventHandler.java:112)
[18:25:52] [Server thread/ERROR]: #!#!     at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
[18:25:52] [Server thread/ERROR]: #!#!     at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)
[18:25:52] [Server thread/ERROR]: #!#!     at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)
[18:25:52] [Server thread/ERROR]: #!#!     at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:378)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.EntityLiving.die(EntityLiving.java:874)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.EntityCreeper.die(EntityCreeper.java:137)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.EntityLiving.damageEntity(EntityLiving.java:812)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.EntityMonster.damageEntity(EntityMonster.java:42)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.Explosion.a(Explosion.java:131)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.World.createExplosion(World.java:1866)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.WorldServer.createExplosion(WorldServer.java:1020)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.EntityCreeper.cr(EntityCreeper.java:216)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.EntityCreeper.t_(EntityCreeper.java:103)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.World.entityJoinedWorld(World.java:1607)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.World.g(World.java:1582)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.World.tickEntities(World.java:1425)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.WorldServer.tickEntities(WorldServer.java:597)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:786)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654)
[18:25:52] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557)
[18:25:52] [Server thread/ERROR]: #!#!     at java.lang.Thread.run(Thread.java:745)
[18:25:52] [Server thread/ERROR]: #!#!
[18:25:52] [Server thread/ERROR]: #!#! Version Information:
[18:25:52] [Server thread/ERROR]: #!#!   Skript: 2.2-dev23
[18:25:52] [Server thread/ERROR]: #!#!   Bukkit: 1.8.8-R0.1-SNAPSHOT
[18:25:52] [Server thread/ERROR]: #!#!   Minecraft: 1.8.8
[18:25:52] [Server thread/ERROR]: #!#!   Java: 1.8.0_101 (Java HotSpot(TM) 64-Bit Server VM 25.101-b13)
[18:25:52] [Server thread/ERROR]: #!#!   OS: Linux amd64 4.4.26-nitradoV3-MC-1000-nH-dP-d-i
[18:25:52] [Server thread/ERROR]: #!#!
[18:25:52] [Server thread/ERROR]: #!#! Running CraftBukkit: false
[18:25:52] [Server thread/ERROR]: #!#!
[18:25:52] [Server thread/ERROR]: #!#! Current node: null
[18:25:52] [Server thread/ERROR]: #!#! Current item: null
[18:25:52] [Server thread/ERROR]: #!#!
[18:25:52] [Server thread/ERROR]: #!#! Thread: Server thread
[18:25:52] [Server thread/ERROR]: #!#!
[18:25:52] [Server thread/ERROR]: #!#! End of Error.
[18:25:52] [Server thread/ERROR]: #!#!