Błąd z pluginem Citizens na wersję 1.9

Witam,

przy przywołaniu komendy /npc create test wyskakuje taki błąd w konsoli:

[10:19:21 INFO]: Qotrek issued server command: /npc create test
[10:19:21 WARN]: java.lang.Throwable: Unexpected NavigationListener add
[10:19:21 WARN]:        at net.minecraft.server.v1_9_R1.NavigationListener.a(NavigationListener.java:16)
[10:19:21 WARN]:        at net.citizensnpcs.util.nms.PlayerNavigation.<init>(PlayerNavigation.java:51)
[10:19:21 WARN]:        at net.citizensnpcs.npc.entity.EntityHumanNPC.initialise(EntityHumanNPC.java:261)
[10:19:21 WARN]:        at net.citizensnpcs.npc.entity.EntityHumanNPC.<init>(EntityHumanNPC.java:84)
[10:19:21 WARN]:        at net.citizensnpcs.npc.entity.HumanController.createEntity(HumanController.java:82)
[10:19:21 WARN]:        at net.citizensnpcs.npc.AbstractEntityController.spawn(AbstractEntityController.java:35)
[10:19:21 WARN]:        at net.citizensnpcs.npc.CitizensNPC.spawn(CitizensNPC.java:192)
[10:19:21 WARN]:        at net.citizensnpcs.commands.NPCCommands.create(NPCCommands.java:407)
[10:19:21 WARN]:        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[10:19:21 WARN]:        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[10:19:21 WARN]:        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[10:19:21 WARN]:        at java.lang.reflect.Method.invoke(Unknown Source)
[10:19:21 WARN]:        at net.citizensnpcs.api.command.CommandManager.executeMethod(CommandManager.java:152)
[10:19:21 WARN]:        at net.citizensnpcs.api.command.CommandManager.execute(CommandManager.java:87)
[10:19:21 WARN]:        at net.citizensnpcs.api.command.CommandManager.executeSafe(CommandManager.java:175)
[10:19:21 WARN]:        at net.citizensnpcs.Citizens.onCommand(Citizens.java:236)
[10:19:21 WARN]:        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
[10:19:21 WARN]:        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141)
[10:19:21 WARN]:        at org.bukkit.craftbukkit.v1_9_R1.CraftServer.dispatchCommand(CraftServer.java:645)
[10:19:21 WARN]:        at net.minecraft.server.v1_9_R1.PlayerConnection.handleCommand(PlayerConnection.java:1350)
[10:19:21 WARN]:        at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1185)
[10:19:21 WARN]:        at net.minecraft.server.v1_9_R1.PacketPlayInChat.a(PacketPlayInChat.java:45)
[10:19:21 WARN]:        at net.minecraft.server.v1_9_R1.PacketPlayInChat.a(PacketPlayInChat.java:1)
[10:19:21 WARN]:        at net.minecraft.server.v1_9_R1.PlayerConnectionUtils$1.run(SourceFile:13)
[10:19:21 WARN]:        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
[10:19:21 WARN]:        at java.util.concurrent.FutureTask.run(Unknown Source)
[10:19:21 WARN]:        at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:45)
[10:19:21 WARN]:        at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:721)
[10:19:21 WARN]:        at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400)
[10:19:21 WARN]:        at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:660)
[10:19:21 WARN]:        at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:559)
[10:19:21 WARN]:        at java.lang.Thread.run(Unknown Source)

Czy można prosić o pomoc w rozwiązaniu tego błędu