[17:00:21 INFO]: SoptikHa issued server command: /woof
[17:00:21 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'woof
' in plugin MobSounds v1.0
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[cra
ftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6ac518-b306
1jnks]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:18
0) ~[craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6ac
518-b3061jnks]
        at org.bukkit.craftbukkit.v1_7_R3.CraftServer.dispatchCommand(CraftServe
r.java:703) ~[craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3
-35-gd6ac518-b3061jnks]
        at net.minecraft.server.v1_7_R3.PlayerConnection.handleCommand(PlayerCon
nection.java:953) [craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2
-R0.3-35-gd6ac518-b3061jnks]
        at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java
:815) [craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6
ac518-b3061jnks]
        at net.minecraft.server.v1_7_R3.PacketPlayInChat.a(PacketPlayInChat.java
:28) [craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6a
c518-b3061jnks]
        at net.minecraft.server.v1_7_R3.PacketPlayInChat.handle(PacketPlayInChat
.java:47) [craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35
-gd6ac518-b3061jnks]
        at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:157
) [craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6ac51
8-b3061jnks]
        at net.minecraft.server.v1_7_R3.ServerConnection.c(SourceFile:134) [craf
tbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6ac518-b3061
jnks]
        at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:6
67) [craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6ac
518-b3061jnks]
        at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:2
60) [craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6ac
518-b3061jnks]
        at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:5
58) [craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6ac
518-b3061jnks]
        at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java
:469) [craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6
ac518-b3061jnks]
        at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:6
28) [craftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6ac
518-b3061jnks]
Caused by: java.lang.NoSuchMethodError: org.bukkit.Bukkit.getOnlinePlayers()Ljav
a/util/Collection;
        at me.mobsounds.Main.onCommand(Main.java:38) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[cra
ftbukkit-1.7.9-R0.1-20140418.143945-5.jar:git-Bukkit-1.7.2-R0.3-35-gd6ac518-b306
1jnks]
        ... 13 more