org.bukkit.command.CommandException: Unhandled exception executing 'skills' in net.Indyuce.mmocore.command.SkillsCommand(skills)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:178) ~[purpur-api-1.19.3-R0.1-SNAPSHOT.jar:?]
	at org.bukkit.craftbukkit.v1_19_R2.CraftServer.dispatchCommand(CraftServer.java:926) ~[purpur-1.19.3.jar:git-Purpur-1924]
	at org.bukkit.craftbukkit.v1_19_R2.command.BukkitCommandWrapper.run(BukkitCommandWrapper.java:64) ~[purpur-1.19.3.jar:git-Purpur-1924]
	at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:264) ~[purpur-1.19.3.jar:?]
	at net.minecraft.commands.Commands.performCommand(Commands.java:324) ~[?:?]
	at net.minecraft.commands.Commands.performCommand(Commands.java:308) ~[?:?]
	at net.minecraft.server.network.ServerGamePacketListenerImpl.performChatCommand(ServerGamePacketListenerImpl.java:2379) ~[?:?]
	at net.minecraft.server.network.ServerGamePacketListenerImpl.lambda$handleChatCommand$21(ServerGamePacketListenerImpl.java:2339) ~[?:?]
	at net.minecraft.util.thread.BlockableEventLoop.lambda$submitAsync$0(BlockableEventLoop.java:59) ~[?:?]
	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) ~[?:?]
	at net.minecraft.server.TickTask.run(TickTask.java:18) ~[purpur-1.19.3.jar:git-Purpur-1924]
	at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:153) ~[?:?]
	at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[?:?]
	at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1368) ~[purpur-1.19.3.jar:git-Purpur-1924]
	at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:197) ~[purpur-1.19.3.jar:git-Purpur-1924]
	at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:126) ~[?:?]
	at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1345) ~[purpur-1.19.3.jar:git-Purpur-1924]
	at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1338) ~[purpur-1.19.3.jar:git-Purpur-1924]
	at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:136) ~[?:?]
	at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1316) ~[purpur-1.19.3.jar:git-Purpur-1924]
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1204) ~[purpur-1.19.3.jar:git-Purpur-1924]
	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:321) ~[purpur-1.19.3.jar:git-Purpur-1924]
	at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: java.lang.IllegalArgumentException: Your skill GUI config file is out-of-date, please regenerate it.
	at org.apache.commons.lang.Validate.notNull(Validate.java:192) ~[commons-lang-2.6.jar:2.6]
	at net.Indyuce.mmocore.gui.SkillList$SkillViewerInventory.<init>(SkillList.java:349) ~[MMOCore.jar:?]
	at net.Indyuce.mmocore.gui.SkillList.newInventory(SkillList.java:98) ~[MMOCore.jar:?]
	at net.Indyuce.mmocore.command.SkillsCommand.execute(SkillsCommand.java:34) ~[MMOCore.jar:?]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:168) ~[purpur-api-1.19.3-R0.1-SNAPSHOT.jar:?]
	... 22 more