Hello.. my citizens doesn't work..When i type /npc create i've get this in chat: An internal error  occurred while attempting to perform this comand.. and in my console is this:

10.11 02:57:39 [Server] ERROR null 10.11 02:57:39 [Server] INFO org.bukkit.command.CommandException: Cannot execute command '/npc create' in plugin Citizens v2.0.24-SNAPSHOT (build 1567) - plugin is disabled. 10.11 02:57:39 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:36) ~[spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at org.bukkit.craftbukkit.v1_13_R1.CraftServer.dispatchCommand(CraftServer.java:692) ~[spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at net.minecraft.server.v1_13_R1.PlayerConnection.handleCommand(PlayerConnection.java:1634) ~[spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at net.minecraft.server.v1_13_R1.PlayerConnection.a(PlayerConnection.java:1469) ~[spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at net.minecraft.server.v1_13_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) ~[spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at net.minecraft.server.v1_13_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) ~[spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at net.minecraft.server.v1_13_R1.PlayerConnectionUtils.a(SourceFile:10) ~[spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_144] 10.11 02:57:39 [Server] INFO at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_144] 10.11 02:57:39 [Server] INFO at net.minecraft.server.v1_13_R1.SystemUtils.a(SourceFile:198) [spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at net.minecraft.server.v1_13_R1.MinecraftServer.w(MinecraftServer.java:884) [spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at net.minecraft.server.v1_13_R1.DedicatedServer.w(DedicatedServer.java:411) [spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at net.minecraft.server.v1_13_R1.MinecraftServer.v(MinecraftServer.java:819) [spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7] 10.11 02:57:39 [Server] INFO at net.minecraft.server.v1_13_R1.MinecraftServer.run(MinecraftServer.java:717) [spigot-1.13.jar:git-Spigot-ed1cec9-1c7adf7]
And i can't even remove this version from server idk why.. i've tryed all of the procesbut it just stays in....Please help some1