Players not able to execute /is while in a boat

[wellnesscookie]

Description

Describe the bug

• Players that sit in a boat and write /is receive output:
  An internal error ocurred while attempting to perform this command.
  While the console throws an error (See below)

Steps to reproduce the behavior

1. Have A Player sit in a boat while on an island
2. Have A Player execute /is
3. A Player will receive: An internal error ocurred while attempting to perform this command.
4. See console for:

[23:08:16] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing 'is' in world.bentobox.bskyblock.commands.IslandCommand(island)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159) ~[patched_1.13.2.jar:git-Paper-564]
	at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:734) ~[patched_1.13.2.jar:git-Paper-564]
	at net.minecraft.server.v1_13_R2.PlayerConnection.handleCommand(PlayerConnection.java:1798) ~[patched_1.13.2.jar:git-Paper-564]
	at net.minecraft.server.v1_13_R2.PlayerConnection.a(PlayerConnection.java:1606) ~[patched_1.13.2.jar:git-Paper-564]
	at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(PacketPlayInChat.java:45) ~[patched_1.13.2.jar:git-Paper-564]
	at net.minecraft.server.v1_13_R2.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[patched_1.13.2.jar:git-Paper-564]
	at net.minecraft.server.v1_13_R2.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:15) ~[patched_1.13.2.jar:git-Paper-564]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:514) ~[?:?]
	at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
	at net.minecraft.server.v1_13_R2.SystemUtils.a(SystemUtils.java:108) ~[patched_1.13.2.jar:git-Paper-564]
	at net.minecraft.server.v1_13_R2.MinecraftServer.b(MinecraftServer.java:1011) ~[patched_1.13.2.jar:git-Paper-564]
	at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:439) ~[patched_1.13.2.jar:git-Paper-564]
	at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:938) ~[patched_1.13.2.jar:git-Paper-564]
	at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:836) ~[patched_1.13.2.jar:git-Paper-564]
	at java.lang.Thread.run(Thread.java:844) [?:?]
Caused by: java.lang.IllegalArgumentException: Material cannot be null
	at org.apache.commons.lang.Validate.notNull(Validate.java:192) ~[patched_1.13.2.jar:git-Paper-564]
	at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:73) ~[patched_1.13.2.jar:git-Paper-564]
	at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:61) ~[patched_1.13.2.jar:git-Paper-564]
	at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:49) ~[patched_1.13.2.jar:git-Paper-564]
	at world.bentobox.bentobox.managers.IslandsManager.homeTeleport(IslandsManager.java:583) ~[?:?]
	at world.bentobox.bentobox.managers.IslandsManager.homeTeleport(IslandsManager.java:535) ~[?:?]
	at world.bentobox.bentobox.api.commands.island.IslandGoCommand.execute(IslandGoCommand.java:50) ~[?:?]
	at world.bentobox.bskyblock.commands.IslandCommand.lambda$execute$0(IslandCommand.java:72) ~[?:?]
	at java.util.Optional.map(Optional.java:254) ~[?:?]
	at world.bentobox.bskyblock.commands.IslandCommand.execute(IslandCommand.java:72) ~[?:?]
	at world.bentobox.bentobox.api.commands.CompositeCommand.execute(CompositeCommand.java:251) ~[?:?]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) ~[patched_1.13.2.jar:git-Paper-564]

5. The teleportation is canceled, A Player is dismounted and the boat disappears.

Expected behavior

• Not quite sure what should it do with the boat, but the player should definitely be teleported to his island when executing /is command

Environment

Server

• OS: Debian GNU/Linux 9
• Java version:
  Java(TM) SE Runtime Environment 18.3 (build 10.0.1+10)
  Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.1+10, mixed mode)

Plugins

[06:32:17 INFO]: Plugins (50): AnimatedNames*, AreaShop, ArmorStandTools, BentoBox, BungeeTabListPlus*, ChatControl, ChestCommands, ChestShop*, ClearLag*, CrateReloaded, EditableSign, Essentials, EssentialsChat*, EssentialsSpawn*, ExecuteEverywhere*, FastAsyncWorldEdit*, FeatherBoard*, HeadDatabase*, HolographicDisplays, HungerKeeperPlus*, IPWhitelist*, IslandBorder, LeaderHeads*, LibsDisguises, LuckPerms, MobManager*, Multiverse-Core*, MVdWPlaceholderAPI*, NickRemover*, NoSleepCMDs*, OpenInv*, PlayerHeads, PlayerPoints*, ProtocolLib*, PvPManager*, PvPManagerBossBar*, RedstoneClockDetector*, RPGHealthIndicator*, SilkSpawners, SkinsRestorer, Spartan, TradeMe, TrophyHeads*, UnbreakingAnvils*, Vault*, VoidGenerator, WorldEdit, WorldGuard, WorldGuardPistonFix*, Yamler*

BentoBox setup

BentoBox and Addons

[23:23:07] [main/INFO]: [CHAT] Running PAPER 1.13.2.
[23:23:07] [main/INFO]: [CHAT] BentoBox version: 1.4.0-SNAPSHOT
[23:23:07] [main/INFO]: [CHAT] Loaded Game Worlds:
[23:23:07] [main/INFO]: [CHAT] skyblock (skyblock)
[23:23:07] [main/INFO]: [CHAT] Loaded Add-Ons
[23:23:07] [main/INFO]: [CHAT] BSkyBlock 1.3.0-SNAPSHOT
[23:23:07] [main/INFO]: [CHAT] Challenges 0.6.0
[23:23:07] [main/INFO]: [CHAT] Level 1.2.2-SNAPSHOT
[23:23:07] [main/INFO]: [CHAT] SerbCraftAddon 2.0
[23:23:07] [main/INFO]: [CHAT] WelcomeWarps 1.2.1-SNAPSHOT

Configuration

• Database: mySQL

Additional context

• None for now, good luck with solving.

[tastybento]

Thanks for the report.