Error

[20:10:30] [Server thread/ERROR]: #!#!
[20:10:30] [Server thread/ERROR]: #!#! [Skript] Severe Error:
[20:10:30] [Server thread/ERROR]: #!#!
[20:10:30] [Server thread/ERROR]: #!#! If you're developing an add-on for Skript this likely means that you have done something wrong.
[20:10:30] [Server thread/ERROR]: #!#! If you're a server admin however please go to https://github.com/bensku/Skript/issues/
[20:10:30] [Server thread/ERROR]: #!#! and check whether this error has already been reported.
[20:10:30] [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),
[20:10:30] [Server thread/ERROR]: #!#! and describe what you did before it happened and/or what you think caused the error.
[20:10:30] [Server thread/ERROR]: #!#! If you think that it's a trigger that's causing the error please post the trigger as well.
[20:10:30] [Server thread/ERROR]: #!#! By following this guide fixing the error should be easy and done fast.
[20:10:30] [Server thread/ERROR]: #!#!
[20:10:30] [Server thread/ERROR]: #!#! Stack trace:
[20:10:30] [Server thread/ERROR]: #!#! java.lang.IllegalArgumentException: Packet of sender CLIENT cannot be sent to a client.
[20:10:30] [Server thread/ERROR]: #!#!     at com.comphenix.protocol.injector.PacketFilterManager.sendServerPacket(PacketFilterManager.java:776)
[20:10:30] [Server thread/ERROR]: #!#!     at com.comphenix.protocol.injector.PacketFilterManager.sendServerPacket(PacketFilterManager.java:761)
[20:10:30] [Server thread/ERROR]: #!#!     at com.pie.tlatoani.ProtocolLib.EffSendPacket.execute(EffSendPacket.java:24)
[20:10:30] [Server thread/ERROR]: #!#!     at ch.njol.skript.lang.Effect.run(Effect.java:54)
[20:10:30] [Server thread/ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:65)
[20:10:30] [Server thread/ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:93)
[20:10:30] [Server thread/ERROR]: #!#!     at ch.njol.skript.effects.Delay$1.run(Delay.java:84)
[20:10:30] [Server thread/ERROR]: #!#!     at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:59)
[20:10:30] [Server thread/ERROR]: #!#!     at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:349)
[20:10:30] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:781)
[20:10:30] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378)
[20:10:30] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713)
[20:10:30] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616)
[20:10:30] [Server thread/ERROR]: #!#!     at java.lang.Thread.run(Unknown Source)
[20:10:30] [Server thread/ERROR]: #!#!
[20:10:30] [Server thread/ERROR]: #!#! Version Information:
[20:10:30] [Server thread/ERROR]: #!#!   Skript: 2.2-dev25
[20:10:30] [Server thread/ERROR]: #!#!   Bukkit: 1.8.8-R0.1-SNAPSHOT
[20:10:30] [Server thread/ERROR]: #!#!   Minecraft: 1.8.8
[20:10:30] [Server thread/ERROR]: #!#!   Java: 1.8.0_121 (Java HotSpot(TM) 64-Bit Server VM 25.121-b13)
[20:10:30] [Server thread/ERROR]: #!#!   OS: Windows 7 amd64 6.1
[20:10:30] [Server thread/ERROR]: #!#!
[20:10:30] [Server thread/ERROR]: #!#! Running CraftBukkit: false
[20:10:30] [Server thread/ERROR]: #!#!
[20:10:30] [Server thread/ERROR]: #!#! Current node: null
[20:10:30] [Server thread/ERROR]: #!#! Current item: send packet %packet% to %player%
[20:10:30] [Server thread/ERROR]: #!#!
[20:10:30] [Server thread/ERROR]: #!#! Thread: Server thread
[20:10:30] [Server thread/ERROR]: #!#!
[20:10:30] [Server thread/ERROR]: #!#! End of Error.
[20:10:30] [Server thread/ERROR]: #!#!