Errors in console!

[Rettox]

Hello there. I'm having a problem with errors in console. I wrote 4 commands, completely correctly. However, skript is not reading them and throwing errors.
>[2K [14:22:17 INFO]: [Skript] Reloading skillpvp.sk...
>[2K [14:22:17 ERROR]: #!#!
>[2K [14:22:17 ERROR]: #!#! [Skript] Severe Error:
>[2K [14:22:17 ERROR]: #!#! Could not load skillpvp.sk
>[2K [14:22:17 ERROR]: #!#!
>[2K [14:22:17 ERROR]: #!#! If you're developing an add-on for Skript this likely means that you have done something wrong.
>[2K [14:22:17 ERROR]: #!#! If you're a server admin however please go to https://github.com/bensku/Skript/issues/
>[2K [14:22:17 ERROR]: #!#! and check whether this error has already been reported.
>[2K [14:22:17 ERROR]: #!#! If not please create a new ticket with a meaningful title, copy & paste this whole error into it (or use paste service),
>[2K [14:22:17 ERROR]: #!#! and describe what you did before it happened and/or what you think caused the error.
>[2K [14:22:17 ERROR]: #!#! If you think that it's a trigger that's causing the error please post the trigger as well.
>[2K [14:22:17 ERROR]: #!#! By following this guide fixing the error should be easy and done fast.
>[2K [14:22:17 ERROR]: #!#!
>[2K [14:22:17 ERROR]: #!#! Stack trace:
>[2K [14:22:17 ERROR]: #!#! java.lang.ArrayIndexOutOfBoundsException: -1
>[2K [14:22:17 ERROR]: #!#! at java.util.ArrayList.elementData(ArrayList.java:418)
>[2K [14:22:17 ERROR]: #!#! at java.util.ArrayList.get(ArrayList.java:431)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.expressions.ExprArgument.init(ExprArgument.java:98)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.SkriptParser.parse(SkriptParser.java:249)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.SkriptParser.parse(SkriptParser.java:176)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.SkriptParser.parseSingleExpr(SkriptParser.java:321)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.SkriptParser.parseExpression(SkriptParser.java:418)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.VariableString.newInstance(VariableString.java:197)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.VariableString.newInstance(VariableString.java:109)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.SkriptParser.parseSingleExpr(SkriptParser.java:319)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.SkriptParser.parseExpression(SkriptParser.java:418)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.SkriptParser.parse_i(SkriptParser.java:1132)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.SkriptParser.parse(SkriptParser.java:221)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.SkriptParser.parse(SkriptParser.java:176)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.lang.Condition.parse(Condition.java:83)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.ScriptLoader.loadItems(ScriptLoader.java:833)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.command.Commands.loadCommand(Commands.java:467)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.ScriptLoader.loadScript(ScriptLoader.java:472)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.ScriptLoader.loadScripts(ScriptLoader.java:271)
>[2K [14:22:17 ERROR]: #!#! at ch.njol.skript.SkriptCommand.onCommand(SkriptCommand.java:167)
>[2K [14:22:17 ERROR]: #!#! at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
>[2K [14:22:17 ERROR]: #!#! at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141)
>[2K [14:22:17 ERROR]: #!#! at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:650)
>[2K [14:22:17 ERROR]: #!#! at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchServerCommand(CraftServer.java:636)
>[2K [14:22:17 ERROR]: #!#! at net.minecraft.server.v1_11_R1.DedicatedServer.aM(DedicatedServer.java:437)
>[2K [14:22:17 ERROR]: #!#! at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:400)
>[2K [14:22:17 ERROR]: #!#! at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:678)
>[2K [14:22:17 ERROR]: #!#! at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:576)
>[2K [14:22:17 ERROR]: #!#! at java.lang.Thread.run(Thread.java:745)
>[2K [14:22:17 ERROR]: #!#!
>[2K [14:22:17 ERROR]: #!#! Version Information:
>[2K [14:22:17 ERROR]: #!#! Skript: 2.2-dev24b
>[2K [14:22:17 ERROR]: #!#! Bukkit: 1.11.2-R0.1-SNAPSHOT
>[2K [14:22:17 ERROR]: #!#! Minecraft: 1.11.2
>[2K [14:22:17 ERROR]: #!#! Java: 1.8.0_121 (Java HotSpot(TM) 64-Bit Server VM 25.121-b13)
>[2K [14:22:17 ERROR]: #!#! OS: Linux amd64 3.16.0-0.bpo.4-amd64
>[2K [14:22:17 ERROR]: #!#!
>[2K [14:22:17 ERROR]: #!#! Running CraftBukkit: false
>[2K [14:22:17 ERROR]: #!#!
>[2K [14:22:17 ERROR]: #!#! Current node: if "%arg 0%" is not set: (skillpvp.sk, line 17)
>[2K [14:22:17 ERROR]: #!#! Current item: null
>[2K [14:22:17 ERROR]: #!#!
>[2K [14:22:17 ERROR]: #!#! Thread: Server thread
>[2K [14:22:17 ERROR]: #!#!
>[2K [14:22:17 ERROR]: #!#! End of Error.
>[2K [14:22:17 ERROR]: #!#!
>[2K [14:22:17 INFO]: [Skript] Successfully reloaded skillpvp.sk.


Don't mind "%arg 0%" as i tried every format.

 

[ShaneBee]

There's no such thing as "argument 0".

Skript is not zero-indexed, meaning that 1 is used for the first value (instead of 0 in the majority of languages)

 

[ShaneBee]

Many thanks. Looks like i forgot basics after 2 weeks of scripting pause...