[11:13:27 ERROR]: Command exception: /drill
org.bukkit.command.CommandException: Unhandled exception executing command 'drill' in plugin Main v1.0-SNAPSHOT
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[paper-api-1.21.4-R0.1-SNAPSHOT.jar:?]
	at io.papermc.paper.command.brigadier.bukkit.BukkitCommandNode$BukkitBrigCommand.run(BukkitCommandNode.java:82) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at com.mojang.brigadier.context.ContextChain.runExecutable(ContextChain.java:73) ~[brigadier-1.3.10.jar:?]
	at net.minecraft.commands.execution.tasks.ExecuteCommand.execute(ExecuteCommand.java:30) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.commands.execution.tasks.ExecuteCommand.execute(ExecuteCommand.java:13) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.commands.execution.UnboundEntryAction.lambda$bind$0(UnboundEntryAction.java:8) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.commands.execution.CommandQueueEntry.execute(CommandQueueEntry.java:5) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.commands.execution.ExecutionContext.runCommandQueue(ExecutionContext.java:105) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.commands.Commands.executeCommandInContext(Commands.java:450) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.commands.Commands.performCommand(Commands.java:357) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.commands.Commands.performCommand(Commands.java:347) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.commands.Commands.performCommand(Commands.java:341) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.server.network.ServerGamePacketListenerImpl.performUnsignedChatCommand(ServerGamePacketListenerImpl.java:2214) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.server.network.ServerGamePacketListenerImpl.lambda$handleChatCommand$11(ServerGamePacketListenerImpl.java:2187) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.server.TickTask.run(TickTask.java:18) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:155) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1448) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:176) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:129) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1428) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1422) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:139) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.server.MinecraftServer.managedBlock(MinecraftServer.java:1379) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1387) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1264) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:310) ~[paper-1.21.4.jar:1.21.4-227-7675321]
	at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.main.main.drill
	at main.jar/org.main.main.drillcommand.onCommand(drillcommand.java:50) ~[main.jar:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[paper-api-1.21.4-R0.1-SNAPSHOT.jar:?]
	... 27 more
Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.IllegalArgumentException: Invalid namespace. Must be [a-z0-9._-]:  [in thread "Server thread"]
	at com.google.common.base.Preconditions.checkArgument(Preconditions.java:218) ~[guava-33.3.1-jre.jar:?]
	at org.bukkit.NamespacedKey.validate(NamespacedKey.java:118) ~[paper-api-1.21.4-R0.1-SNAPSHOT.jar:?]
	at org.bukkit.NamespacedKey.<init>(NamespacedKey.java:91) ~[paper-api-1.21.4-R0.1-SNAPSHOT.jar:?]
	at main.jar/org.main.main.drill.<clinit>(drill.java:7) ~[main.jar:?]
	at main.jar/org.main.main.drillcommand.onCommand(drillcommand.java:50) ~[main.jar:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[paper-api-1.21.4-R0.1-SNAPSHOT.jar:?]
	... 27 more