포션이라는 아이템을 우클릭시  원래 1개씩 사라지다가 (중간에 애드온 더 설치했음} 갑자기 포션이 2개씩 사라지면서 콘솔에 이런게 떠요 무슨문제인가요? (애드온 더 설치하기 이전에는 플레이어가 플레이어를 죽였을때  메시지가 2번 뜨기도 함)

[20:18:15 ERROR]: #!#!

[20:18:15 ERROR]: #!#! [Skript] Severe Error:

[20:18:15 ERROR]: #!#!

[20:18:15 ERROR]: #!#! Something went horribly wrong with Skript.

[20:18:15 ERROR]: #!#! This issue is NOT your fault! You probably can't fix it yourself, either.

[20:18:15 ERROR]: #!#! You're running outdated version of Skript! Please try updating it NOW; it might fix this.

[20:18:15 ERROR]: #!#! Run /sk update check to get a download link to latest Skript!

[20:18:15 ERROR]: #!#! You will be given instructions how to report this error if it persists after update.

[20:18:15 ERROR]: #!#!

[20:18:15 ERROR]: #!#! Stack trace:

[20:18:15 ERROR]: #!#! java.lang.NullPointerException: Cannot invoke "Object.equals(Object)" because the return value of "org.bukkit.inventory.ItemStack.getItemMeta()" is null

[20:18:15 ERROR]: #!#!     at ch.njol.skript.bukkitutil.ItemUtils.itemStacksEqual(ItemUtils.java:142)

[20:18:15 ERROR]: #!#!     at ch.njol.skript.classes.data.SkriptClasses$16.change(SkriptClasses.java:622)

[20:18:15 ERROR]: #!#!     at ch.njol.skript.classes.data.SkriptClasses$16.change(SkriptClasses.java:1)

[20:18:15 ERROR]: #!#!     at ch.njol.skript.lang.util.SimpleExpression.change(SimpleExpression.java:243)

[20:18:15 ERROR]: #!#!     at ch.njol.skript.effects.EffChange.execute(EffChange.java:284)

[20:18:15 ERROR]: #!#!     at ch.njol.skript.lang.Effect.run(Effect.java:52)

[20:18:15 ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:61)

[20:18:15 ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:89)

[20:18:15 ERROR]: #!#!     at ch.njol.skript.lang.Trigger.execute(Trigger.java:57)

[20:18:15 ERROR]: #!#!     at ch.njol.skript.SkriptEventHandler.check(SkriptEventHandler.java:156)

[20:18:15 ERROR]: #!#!     at ch.njol.skript.SkriptEventHandler$1.execute(SkriptEventHandler.java:114)

[20:18:15 ERROR]: #!#!     at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)

[20:18:15 ERROR]: #!#!     at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:500)

[20:18:15 ERROR]: #!#!     at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:485)

[20:18:15 ERROR]: #!#!     at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:235)

[20:18:15 ERROR]: #!#!     at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:202)

[20:18:15 ERROR]: #!#!     at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:198)

[20:18:15 ERROR]: #!#!     at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:993)

[20:18:15 ERROR]: #!#!     at net.minecraft.server.v1_12_R1.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:26)

[20:18:15 ERROR]: #!#!     at net.minecraft.server.v1_12_R1.PacketPlayInBlockPlace.a(PacketPlayInBlockPlace.java:1)

[20:18:15 ERROR]: #!#!     at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13)

[20:18:15 ERROR]: #!#!     at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)

[20:18:15 ERROR]: #!#!     at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)

[20:18:15 ERROR]: #!#!     at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46)

[20:18:15 ERROR]: #!#!     at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748)

[20:18:15 ERROR]: #!#!     at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406)

[20:18:15 ERROR]: #!#!     at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679)

[20:18:15 ERROR]: #!#!     at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577)

[20:18:15 ERROR]: #!#!     at java.base/java.lang.Thread.run(Thread.java:833)

[20:18:15 ERROR]: #!#!

[20:18:15 ERROR]: #!#! Version Information:

[20:18:15 ERROR]: #!#!   Skript: 2.4.1 (OUTDATED)

[20:18:15 ERROR]: #!#!     Flavor: skriptlang-github

[20:18:15 ERROR]: #!#!     Date: 2019-12-22

[20:18:15 ERROR]: #!#!   Bukkit: 1.12.2-R0.1-SNAPSHOT

[20:18:15 ERROR]: #!#!   Minecraft: 1.12.2

[20:18:15 ERROR]: #!#!   Java: 18.0.2 (Java HotSpot(TM) 64-Bit Server VM 18.0.2+9-61)

[20:18:15 ERROR]: #!#!   OS: Windows 11 amd64 10.0

[20:18:15 ERROR]: #!#!

[20:18:15 ERROR]: #!#! Server platform: Spigot

[20:18:15 ERROR]: #!#!

[20:18:15 ERROR]: #!#! Current node: null

[20:18:15 ERROR]: #!#! Current item: remove [[long:1]] of (the tool of the player >> ch.njol.skript.classes.data.DefaultConverters$17@76db3478: slot -> itemstack) from the tool of the player

[20:18:15 ERROR]: #!#! Current trigger: rightclick (rightclick) (?ъ뀡.sk, line 20)

[20:18:15 ERROR]: #!#!

[20:18:15 ERROR]: #!#! Thread: Server thread

[20:18:15 ERROR]: #!#!

[20:18:15 ERROR]: #!#! Language: english

[20:18:15 ERROR]: #!#! Link parse mode: DISABLED

[20:18:15 ERROR]: #!#!

[20:18:15 ERROR]: #!#! End of Error.

[20:18:15 ERROR]: #!#!