we exception

[20:24:43 INFO]: TBlueF: //stack
[20:24:43 ERROR] [STDERR]: [com.sk89q.worldedit.extension.platform.CommandManager.handleCommand(CommandManager.java:278)]: Mar 07, 2017 8:24:43 PM com.sk89q.worldedit.extension.platform.CommandManager handleCommand
SEVERE: [WorldEdit] An unexpected error while handling a WorldEdit command
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.sk89q.worldedit.util.command.parametric.ParametricCallable.call(ParametricCallable.java:228)
	at com.sk89q.worldedit.util.command.SimpleDispatcher.call(SimpleDispatcher.java:125)
	at com.sk89q.worldedit.extension.platform.CommandManager.handleCommand(CommandManager.java:248)
	at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.sk89q.worldedit.util.eventbus.MethodEventHandler.dispatch(MethodEventHandler.java:58)
	at com.sk89q.worldedit.util.eventbus.EventHandler.handleEvent(EventHandler.java:73)
	at com.sk89q.worldedit.util.eventbus.EventBus.dispatch(EventBus.java:187)
	at com.sk89q.worldedit.util.eventbus.EventBus.post(EventBus.java:173)
	at com.sk89q.worldedit.sponge.SpongePlatform$1.process(SpongePlatform.java:126)
	at org.spongepowered.api.command.dispatcher.SimpleDispatcher.process(SimpleDispatcher.java:336)
	at org.spongepowered.common.command.SpongeCommandManager.process(SpongeCommandManager.java:295)
	at net.minecraft.command.ServerCommandManager.func_71556_a(SourceFile:1083)
	at net.minecraft.network.NetHandlerPlayServer.func_147361_d(SourceFile:818)
	at net.minecraft.network.NetHandlerPlayServer.func_147354_a(SourceFile:805)
	at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:37)
	at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:9)
	at org.spongepowered.common.network.PacketUtil.lambda$onProcessPacket$0(PacketUtil.java:157)
	at org.spongepowered.common.event.tracking.CauseTracker.switchToPhase(CauseTracker.java:156)
	at org.spongepowered.common.network.PacketUtil.onProcessPacket(PacketUtil.java:156)
	at net.minecraft.network.PacketThreadUtil$1.redirect$onProcessPacket$zje000(SourceFile:539)
	at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at net.minecraft.util.Util.func_181617_a(SourceFile:46)
	at net.minecraft.server.MinecraftServer.func_71190_q(SourceFile:1526)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(SourceFile:335)
	at net.minecraft.server.MinecraftServer.func_71217_p(SourceFile:562)
	at net.minecraft.server.MinecraftServer.run(SourceFile:466)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: Cannot construct minecraft:player please look to using entity types correctly!
	at net.minecraft.world.World.createEntity(SourceFile:3432)
	at net.minecraft.world.World.createEntity(SourceFile:3411)
	at com.sk89q.worldedit.sponge.SpongeWorld.createEntity(SpongeWorld.java:269)
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.createEntity(AbstractDelegateExtent.java:84)
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.createEntity(AbstractDelegateExtent.java:84)
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.createEntity(AbstractDelegateExtent.java:84)
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.createEntity(AbstractDelegateExtent.java:84)
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.createEntity(AbstractDelegateExtent.java:84)
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.createEntity(AbstractDelegateExtent.java:84)
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.createEntity(AbstractDelegateExtent.java:84)
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.createEntity(AbstractDelegateExtent.java:84)
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.createEntity(AbstractDelegateExtent.java:84)
	at com.sk89q.worldedit.extent.ChangeSetExtent.createEntity(ChangeSetExtent.java:70)
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.createEntity(AbstractDelegateExtent.java:84)
	at com.sk89q.worldedit.extent.AbstractDelegateExtent.createEntity(AbstractDelegateExtent.java:84)
	at com.sk89q.worldedit.EditSession.createEntity(EditSession.java:618)
	at com.sk89q.worldedit.function.entity.ExtentEntityCopy.apply(ExtentEntityCopy.java:106)
	at com.sk89q.worldedit.function.visitor.EntityVisitor.resume(EntityVisitor.java:67)
	at com.sk89q.worldedit.function.operation.OperationQueue.resume(OperationQueue.java:89)
	at com.sk89q.worldedit.function.operation.DelegateOperation.resume(DelegateOperation.java:52)
	at com.sk89q.worldedit.function.operation.Operations.completeLegacy(Operations.java:55)
	at com.sk89q.worldedit.EditSession.stackCuboidRegion(EditSession.java:1172)
	at com.sk89q.worldedit.command.RegionCommands.stack(RegionCommands.java:314)
	... 35 more