Solved How to move item into specific inventory slot on pick up

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Nunghung

Member
Jun 10, 2020
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I'm trying to get tridents to store in slot 2 of the player's inventory for a minigame. The trident has the loyalty enchantment, but I think the pick up event is also triggered when tridents with loyalty return to the player. I keep getting the error "can't drop air" when I run this code. Tried running with all addons uninstalled, but got the same error. Any ideas?

Code: 
on pick up of trident:
    cancel event
    delete item
    set slot 2 of player's inventory to item
 
SkriptLearner said:
Hey NungHung,

What line in the script is giving the error?

Hopefully I can help.
Click to expand...

The error is thrown when the player actually picks up a trident, there's weirdly no mention of any errors at load. It's one of those 'Severe Errors' so it just gives the line number for the trigger ("test.sk, line 1"). This could be an error with Skript itself, but I doubt it.

Code: 
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! [Skript] Severe Error:
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! Something went horribly wrong with Skript.
[15:01:58 ERROR]: #!#! This issue is NOT your fault! You probably can't fix it yourself, either.
[15:01:58 ERROR]: #!#! You should report it at https://github.com/SkriptLang/Skript/issues. Please copy paste this report there (or use paste service).
[15:01:58 ERROR]: #!#! This ensures that your issue is noticed and will be fixed as soon as possible.
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! Stack trace:
[15:01:58 ERROR]: #!#! java.lang.IllegalArgumentException: Cannot drop air
[15:01:58 ERROR]: #!#!     at com.google.common.base.Preconditions.checkArgument(Preconditions.java:122)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityItem.setItemStack(EntityItem.java:433)
[15:01:58 ERROR]: #!#!     at org.bukkit.craftbukkit.v1_15_R1.entity.CraftItem.setItemStack(CraftItem.java:35)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.expressions.ExprItem.change(ExprItem.java:114)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.effects.EffChange.execute(EffChange.java:284)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.lang.Effect.run(Effect.java:52)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:61)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:89)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.lang.Trigger.execute(Trigger.java:57)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.SkriptEventHandler.check(SkriptEventHandler.java:156)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.SkriptEventHandler$1.execute(SkriptEventHandler.java:114)
[15:01:58 ERROR]: #!#!     at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80)
[15:01:58 ERROR]: #!#!     at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70)
[15:01:58 ERROR]: #!#!     at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:559)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityArrow.pickup(EntityArrow.java:537)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityThrownTrident.pickup(EntityThrownTrident.java:153)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityHuman.c(EntityHuman.java:492)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityHuman.movementTick(EntityHuman.java:465)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityLiving.tick(EntityLiving.java:2383)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityHuman.tick(EntityHuman.java:165)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityPlayer.playerTick(EntityPlayer.java:432)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.PlayerConnection.tick(PlayerConnection.java:149)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.NetworkManager.a(NetworkManager.java:260)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.ServerConnection.c(ServerConnection.java:139)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.MinecraftServer.b(MinecraftServer.java:1269)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.DedicatedServer.b(DedicatedServer.java:430)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:1112)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:934)
[15:01:58 ERROR]: #!#!     at java.lang.Thread.run(Unknown Source)
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! Version Information:
[15:01:58 ERROR]: #!#!   Skript: 2.4.1 (latest)
[15:01:58 ERROR]: #!#!     Flavor: skriptlang-github
[15:01:58 ERROR]: #!#!     Date: 2019-12-22
[15:01:58 ERROR]: #!#!   Bukkit: 1.15.2-R0.1-SNAPSHOT
[15:01:58 ERROR]: #!#!   Minecraft: 1.15.2
[15:01:58 ERROR]: #!#!   Java: 1.8.0_181 (Java HotSpot(TM) 64-Bit Server VM 25.181-b13)
[15:01:58 ERROR]: #!#!   OS: Windows 10 amd64 10.0
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! Server platform: Paper
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! Current node: null
[15:01:58 ERROR]: #!#! Current item: delete/clear event-item stack
[15:01:59 ERROR]: #!#! Current trigger: pick up of trident (dispense/spawn/drop/craft/pickup/consume/break/despawn/merge of trident) (test.sk, line 1)
[15:01:59 ERROR]: #!#!
[15:01:59 ERROR]: #!#! Thread: Server thread
[15:01:59 ERROR]: #!#!
[15:01:59 ERROR]: #!#! Language: english
[15:01:59 ERROR]: #!#! Link parse mode: DISABLED
[15:01:59 ERROR]: #!#!
[15:01:59 ERROR]: #!#! End of Error.
[15:01:59 ERROR]: #!#!
 
Nunghung said:
The error is thrown when the player actually picks up a trident, there's weirdly no mention of any errors at load. It's one of those 'Severe Errors' so it just gives the line number for the trigger ("test.sk, line 1"). This could be an error with Skript itself, but I doubt it.

Code: 
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! [Skript] Severe Error:
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! Something went horribly wrong with Skript.
[15:01:58 ERROR]: #!#! This issue is NOT your fault! You probably can't fix it yourself, either.
[15:01:58 ERROR]: #!#! You should report it at https://github.com/SkriptLang/Skript/issues. Please copy paste this report there (or use paste service).
[15:01:58 ERROR]: #!#! This ensures that your issue is noticed and will be fixed as soon as possible.
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! Stack trace:
[15:01:58 ERROR]: #!#! java.lang.IllegalArgumentException: Cannot drop air
[15:01:58 ERROR]: #!#!     at com.google.common.base.Preconditions.checkArgument(Preconditions.java:122)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityItem.setItemStack(EntityItem.java:433)
[15:01:58 ERROR]: #!#!     at org.bukkit.craftbukkit.v1_15_R1.entity.CraftItem.setItemStack(CraftItem.java:35)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.expressions.ExprItem.change(ExprItem.java:114)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.effects.EffChange.execute(EffChange.java:284)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.lang.Effect.run(Effect.java:52)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:61)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:89)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.lang.Trigger.execute(Trigger.java:57)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.SkriptEventHandler.check(SkriptEventHandler.java:156)
[15:01:58 ERROR]: #!#!     at ch.njol.skript.SkriptEventHandler$1.execute(SkriptEventHandler.java:114)
[15:01:58 ERROR]: #!#!     at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:80)
[15:01:58 ERROR]: #!#!     at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70)
[15:01:58 ERROR]: #!#!     at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:559)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityArrow.pickup(EntityArrow.java:537)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityThrownTrident.pickup(EntityThrownTrident.java:153)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityHuman.c(EntityHuman.java:492)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityHuman.movementTick(EntityHuman.java:465)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityLiving.tick(EntityLiving.java:2383)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityHuman.tick(EntityHuman.java:165)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.EntityPlayer.playerTick(EntityPlayer.java:432)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.PlayerConnection.tick(PlayerConnection.java:149)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.NetworkManager.a(NetworkManager.java:260)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.ServerConnection.c(ServerConnection.java:139)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.MinecraftServer.b(MinecraftServer.java:1269)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.DedicatedServer.b(DedicatedServer.java:430)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:1112)
[15:01:58 ERROR]: #!#!     at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:934)
[15:01:58 ERROR]: #!#!     at java.lang.Thread.run(Unknown Source)
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! Version Information:
[15:01:58 ERROR]: #!#!   Skript: 2.4.1 (latest)
[15:01:58 ERROR]: #!#!     Flavor: skriptlang-github
[15:01:58 ERROR]: #!#!     Date: 2019-12-22
[15:01:58 ERROR]: #!#!   Bukkit: 1.15.2-R0.1-SNAPSHOT
[15:01:58 ERROR]: #!#!   Minecraft: 1.15.2
[15:01:58 ERROR]: #!#!   Java: 1.8.0_181 (Java HotSpot(TM) 64-Bit Server VM 25.181-b13)
[15:01:58 ERROR]: #!#!   OS: Windows 10 amd64 10.0
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! Server platform: Paper
[15:01:58 ERROR]: #!#!
[15:01:58 ERROR]: #!#! Current node: null
[15:01:58 ERROR]: #!#! Current item: delete/clear event-item stack
[15:01:59 ERROR]: #!#! Current trigger: pick up of trident (dispense/spawn/drop/craft/pickup/consume/break/despawn/merge of trident) (test.sk, line 1)
[15:01:59 ERROR]: #!#!
[15:01:59 ERROR]: #!#! Thread: Server thread
[15:01:59 ERROR]: #!#!
[15:01:59 ERROR]: #!#! Language: english
[15:01:59 ERROR]: #!#! Link parse mode: DISABLED
[15:01:59 ERROR]: #!#!
[15:01:59 ERROR]: #!#! End of Error.
[15:01:59 ERROR]: #!#!
Click to expand...
I recommend you take this to the discord server to get instant, direct help and also you will be able to discuss it with people.
 
SkriptLearner said:
I recommend you take this to the discord server to get instant, direct help and also you will be able to discuss it with people.
Click to expand...

Will do. Thanks for your help :emoji_slight_smile:
[doublepost=1591895063,1591886717][/doublepost]Found the issue. I needed to write "delete entity" rather than "delete item"
 
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