citizens npc

[12:05:26] [Server thread/INFO]: BartyRealms issued server command: /npc create test --type player
[12:05:27] [Server thread/WARN]: java.lang.NoSuchFieldError: trackedEntities
[12:05:27] [Server thread/WARN]: 	at net.citizensnpcs.nms.v1_15_R1.util.NMSImpl.replaceTrackerEntry(NMSImpl.java:948)
[12:05:27] [Server thread/WARN]: 	at net.citizensnpcs.util.NMS.replaceTrackerEntry(NMS.java:342)
[12:05:27] [Server thread/WARN]: 	at net.citizensnpcs.npc.CitizensNPC.spawn(CitizensNPC.java:303)
[12:05:27] [Server thread/WARN]: 	at net.citizensnpcs.commands.NPCCommands.create(NPCCommands.java:477)
[12:05:27] [Server thread/WARN]: 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[12:05:27] [Server thread/WARN]: 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[12:05:27] [Server thread/WARN]: 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[12:05:27] [Server thread/WARN]: 	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
[12:05:27] [Server thread/WARN]: 	at net.citizensnpcs.api.command.CommandManager.executeMethod(CommandManager.java:159)
[12:05:27] [Server thread/WARN]: 	at net.citizensnpcs.api.command.CommandManager.execute(CommandManager.java:91)
[12:05:27] [Server thread/WARN]: 	at net.citizensnpcs.api.command.CommandManager.executeSafe(CommandManager.java:187)
[12:05:27] [Server thread/WARN]: 	at net.citizensnpcs.Citizens.onCommand(Citizens.java:263)
[12:05:27] [Server thread/WARN]: 	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45)
[12:05:27] [Server thread/WARN]: 	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159)
[12:05:27] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_15_R1.CraftServer.dispatchCommand(CraftServer.java:753)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.PlayerConnection.handleCommand(PlayerConnection.java:1825)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.PlayerConnection.a(PlayerConnection.java:1635)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.PacketPlayInChat.a(PacketPlayInChat.java:47)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.PacketPlayInChat.a(PacketPlayInChat.java:5)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:19)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.TickTask.run(SourceFile:18)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.MinecraftServer.ba(MinecraftServer.java:1104)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.MinecraftServer.executeNext(MinecraftServer.java:1097)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.MinecraftServer.sleepForTick(MinecraftServer.java:1058)
[12:05:27] [Server thread/WARN]: 	at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:973)
[12:05:27] [Server thread/WARN]: 	at java.base/java.lang.Thread.run(Thread.java:834)