Hub error

[20:52:37] [Server thread/INFO]: jewelsy15 issued server command: /hub
[20:52:37] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'hub' in plugin Hub v1.6.5
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[Craftbukkit.jar:git-Bukkit-e91aed8]
	at me.incomprehendable.dev.pwp.FakeSimpleCommandMap.dispatch(FakeSimpleCommandMap.java:98) ~[?:?]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:621) ~[Craftbukkit.jar:git-Bukkit-e91aed8]
	at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1079) [Craftbukkit.jar:git-Bukkit-e91aed8]
	at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:939) [Craftbukkit.jar:git-Bukkit-e91aed8]
	at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:37) [Craftbukkit.jar:git-Bukkit-e91aed8]
	at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(SourceFile:9) [Craftbukkit.jar:git-Bukkit-e91aed8]
	at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [Craftbukkit.jar:git-Bukkit-e91aed8]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_40]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_40]
	at net.minecraft.server.v1_8_R3.SystemUtils.a(SystemUtils.java:19) [Craftbukkit.jar:git-Bukkit-e91aed8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:676) [Craftbukkit.jar:git-Bukkit-e91aed8]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:335) [Craftbukkit.jar:git-Bukkit-e91aed8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:632) [Craftbukkit.jar:git-Bukkit-e91aed8]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:540) [Craftbukkit.jar:git-Bukkit-e91aed8]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_40]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R3/PathfinderGoal
	at me.ErezCS.Hub.Hub.onCommand(Hub.java:402) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[Craftbukkit.jar:git-Bukkit-e91aed8]
	... 15 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R3.PathfinderGoal
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:67) ~[Craftbukkit.jar:git-Bukkit-e91aed8]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[Craftbukkit.jar:git-Bukkit-e91aed8]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_40]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_40]
	at me.ErezCS.Hub.Hub.onCommand(Hub.java:402) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[Craftbukkit.jar:git-Bukkit-e91aed8]
	... 15 more
[20:53:15]