NPE when accessing `CommandSourceStack#getLocation()`

[TBlueF]

Stack trace

[Server thread/ERROR]: Error executing task on Server
java.lang.NullPointerException: Cannot invoke "net.minecraft.world.level.Level.getWorld()" because "level" is null
	at io.papermc.paper.command.brigadier.PaperCommandSourceStack.getLocation(PaperCommandSourceStack.java:25) ~[paper-1.21.11.jar:?]
	at bluemap-5.14-paper.jar//de.bluecolored.bluemap.bukkit.BukkitCommandSource.getWorld(BukkitCommandSource.java:69) ~[?:?]
	at bluemap-5.14-paper.jar//de.bluecolored.bluemap.common.commands.Commands.lambda$create$7(Commands.java:82) ~[?:?]
	at bluemap-5.14-paper.jar//de.bluecolored.bluecommands.BlueCommands.checkContext(BlueCommands.java:259) ~[?:?]
	at bluemap-5.14-paper.jar//de.bluecolored.bluecommands.MethodCommandExecutable.isValid(MethodCommandExecutable.java:99) ~[?:?]
	at bluemap-5.14-paper.jar//de.bluecolored.bluecommands.Command.checkValid(Command.java:149) ~[?:?]
	at bluemap-5.14-paper.jar//de.bluecolored.bluecommands.Command.isValid(Command.java:141) ~[?:?]
	at bluemap-5.14-paper.jar//de.bluecolored.bluecommands.brigadier.BrigadierBridge.lambda$createCommandNodes$1(BrigadierBridge.java:86) ~[?:?]
	at net.minecraft.commands.Commands$1.isRestricted(Commands.java:185) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.network.protocol.game.ClientboundCommandsPacket.createEntry(ClientboundCommandsPacket.java:157) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.network.protocol.game.ClientboundCommandsPacket.createEntries(ClientboundCommandsPacket.java:106) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.network.protocol.game.ClientboundCommandsPacket.<init>(ClientboundCommandsPacket.java:48) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.commands.Commands.runSync(Commands.java:535) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.commands.Commands.lambda$sendAsync$7(Commands.java:518) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.server.TickTask.run(TickTask.java:18) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:177) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1527) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:188) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:151) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.server.MinecraftServer.runAllTasksAtTickStart(MinecraftServer.java:1179) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.server.MinecraftServer.processPacketsAndTick(MinecraftServer.java:1668) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1337) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:388) ~[paper-1.21.11.jar:1.21.11-38-4446f17]
	at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]

Full log: https://mclo.gs/A1izzfx

Plugin and Datapack List

BlueMap 5.14

Actions to reproduce (if known)

Register a command using Commands#register(LiteralCommandNode) and inside the commands ArgumentBuilder#requires() check, try to access the command-sources location.

Then join the server with a player with full permissions (op).

For this test i set-up a fresh paper-server, installed BlueMap, gave myself op-permissions and joined the server: The error is then thrown here (commands are registered here).

Paper version

> version
[11:00:34 INFO]: Checking version, please wait...
[11:00:34 INFO]: This server is running Paper version 1.21.11-38-main@4446f17 (2025-12-09T22:51:57Z) (Implementing API version 1.21.11-R0.1-SNAPSHOT)
You are running the latest version

Other

The same scenario/code works fine in any 1.21.10 paper version.

[Doc94]

Add a simple code who throws the error.

    @Override
    public void onEnable() {
        this.getServer().getPluginManager().registerEvents(this, this);

        final LifecycleEventManager<Plugin> lifecycleManager = this.getLifecycleManager();
        lifecycleManager.registerEventHandler(LifecycleEvents.COMMANDS, event -> {
            final Commands commands = event.registrar();
            commands.register(Commands.literal("test")
                .requires(sender -> {
                    return sender.getLocation() != null; // marked with not null but need for trigger
                })
                .executes(ctx -> {
                    ctx.getSource().getSender().sendPlainMessage(ctx.getSource().getLocation().toString());
                    return Command.SINGLE_SUCCESS;
                }).build()
            );
        });
    }