Помогите icJukeBox

Пишет ошибку "An internal error occurred while attempting to perform this command" при вводе команды /music.
Консоль:

Код:

[18:57:39] [Server thread/INFO]: max12383 issued server command: /music
[18:57:39] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'music' in plugin icJukeBox v1.6.1
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:641) ~[craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1162) [craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:997) [craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_91]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_91]
    at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_91]
Caused by: java.lang.NullPointerException
    at com.statiocraft.jukebox.commands.cmdMusic.onCommand(cmdMusic.java:32) ~[?:?]
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit.jar:git-Spigot-e4d4710-e1ebe52]
    ... 15 more