org.bukkit.command.CommandException: Unhandled exception executing command 'ew' in plugin EggWars v6.3.0
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at io.papermc.paper.command.brigadier.bukkit.BukkitCommandNode$BukkitBrigCommand.run(BukkitCommandNode.java:91) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at com.mojang.brigadier.context.ContextChain.runExecutable(ContextChain.java:73) ~[brigadier-1.3.10.jar:?]
        at net.minecraft.commands.execution.tasks.ExecuteCommand.execute(ExecuteCommand.java:31) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.commands.execution.tasks.ExecuteCommand.execute(ExecuteCommand.java:19) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.commands.execution.UnboundEntryAction.lambda$bind$0(UnboundEntryAction.java:8) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.commands.execution.CommandQueueEntry.execute(CommandQueueEntry.java:5) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.commands.execution.ExecutionContext.runCommandQueue(ExecutionContext.java:103) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.commands.Commands.executeCommandInContext(Commands.java:443) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.commands.Commands.performCommand(Commands.java:352) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.commands.Commands.performCommand(Commands.java:342) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.commands.Commands.performCommand(Commands.java:337) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.server.network.ServerGamePacketListenerImpl.performSignedChatCommand(ServerGamePacketListenerImpl.java:2306) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.server.network.ServerGamePacketListenerImpl.lambda$handleSignedChatCommand$12(ServerGamePacketListenerImpl.java:2260) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.server.TickTask.run(TickTask.java:18) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:150) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1537) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:204) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:124) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1516) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1509) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:134) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.server.MinecraftServer.managedBlock(MinecraftServer.java:1461) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1471) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1315) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:338) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.ArrayIndexOutOfBoundsException: Index must be between 0 and 40
        at org.bukkit.craftbukkit.inventory.CraftInventoryPlayer.setItem(CraftInventoryPlayer.java:75) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        at EggWars-6.3.0.jar/me.rosillogames.eggwars.utils.ItemUtils.setOptionalHUDItem(ItemUtils.java:63) ~[EggWars-6.3.0.jar:?]
        at EggWars-6.3.0.jar/me.rosillogames.eggwars.arena.game.Lobby.onEnter(Lobby.java:148) ~[EggWars-6.3.0.jar:?]
        at EggWars-6.3.0.jar/me.rosillogames.eggwars.arena.Arena.joinArena(Arena.java:476) ~[EggWars-6.3.0.jar:?]
        at EggWars-6.3.0.jar/me.rosillogames.eggwars.commands.CmdEw$Join.execute(CmdEw.java:256) ~[EggWars-6.3.0.jar:?]
        at EggWars-6.3.0.jar/me.rosillogames.eggwars.commands.CmdEw.onCommand(CmdEw.java:61) ~[EggWars-6.3.0.jar:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[universe-1.21.1.jar:1.21.1-78b2ae5]
        ... 27 more