1.21.11 PurPur error with statrting tutorials

[MG141]

Hello,

The following error is shown when a player first joiuns the server or runs /tutorial command. This outs player into a state where he cannot do anything until he relogs.

[08:20:25 ERROR]: Command exception: /servertutorial play Newbie
org.bukkit.command.CommandException: Unhandled exception executing command 'servertutorial' in plugin ServerTutorialPlus v1.25.3
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[purpur-api-1.21.11-R0.1-SNAPSHOT.jar:?]
at io.papermc.paper.command.brigadier.bukkit.BukkitCommandNode$BukkitBrigCommand.run(BukkitCommandNode.java:83) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at com.mojang.brigadier.context.ContextChain.runExecutable(ContextChain.java:73) ~[brigadier-1.3.10.jar:?]
at net.minecraft.commands.execution.tasks.ExecuteCommand.execute(ExecuteCommand.java:30) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.commands.execution.tasks.ExecuteCommand.execute(ExecuteCommand.java:13) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.commands.execution.UnboundEntryAction.lambda$bind$0(UnboundEntryAction.java:8) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.commands.execution.CommandQueueEntry.execute(CommandQueueEntry.java:5) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.commands.execution.ExecutionContext.runCommandQueue(ExecutionContext.java:104) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.commands.Commands.executeCommandInContext(Commands.java:477) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.commands.Commands.performCommand(Commands.java:382) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.commands.Commands.performCommand(Commands.java:370) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.server.network.ServerGamePacketListenerImpl.performUnsignedChatCommand(ServerGamePacketListenerImpl.java:2456) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.server.network.ServerGamePacketListenerImpl.lambda$handleChatCommand$15(ServerGamePacketListenerImpl.java:2429) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.server.TickTask.run(TickTask.java:18) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:177) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1561) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:188) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:151) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1541) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1535) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.server.MinecraftServer.recordTaskExecutionTimeWhileWaiting(MinecraftServer.java:1240) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1377) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:392) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.IllegalArgumentException: Target world cannot be null
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:141) ~[guava-33.5.0-jre.jar:?]
at org.bukkit.craftbukkit.entity.CraftEntity.teleport(CraftEntity.java:312) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at org.bukkit.craftbukkit.entity.CraftEntity.teleport(CraftEntity.java:306) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at org.bukkit.craftbukkit.entity.CraftEntity.teleport(CraftEntity.java:301) ~[purpur-1.21.11.jar:1.21.11-2562-a917106]
at ServerTutorialPlus-1.25.3.jar//nl.martenm.servertutorialplus.points.ServerTutorialPoint.playDefault(ServerTutorialPoint.java:103) ~[?:?]
at ServerTutorialPlus-1.25.3.jar//nl.martenm.servertutorialplus.points.ServerTutorialPoint$1.start(ServerTutorialPoint.java:79) ~[?:?]
at ServerTutorialPlus-1.25.3.jar//nl.martenm.servertutorialplus.objects.TutorialController.start(TutorialController.java:78) ~[?:?]
at ServerTutorialPlus-1.25.3.jar//nl.martenm.servertutorialplus.commands.sub.tutorials.PlayTutorialCommand.onCommand(PlayTutorialCommand.java:82) ~[?:?]
at ServerTutorialPlus-1.25.3.jar//nl.martenm.simplecommands.RootCommand.onCommand(RootCommand.java:92) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[purpur-api-1.21.11-R0.1-SNAPSHOT.jar:?]
... 24 more