Error in Getting World From Config

Code:java

public Arena(int number) {
this.w = Bukkit.getServer().getWorld(settings.getConfig().getString("arenas." + number + ".world"));
this.bluex = settings.getConfig().getDouble("arenas." + number + ".blue.x");
this.bluey = settings.getConfig().getDouble("arenas." + number + ".blue.y");
this.bluez = settings.getConfig().getDouble("arenas." + number + ".blue.z");
this.redx = settings.getConfig().getDouble("arenas." + number + ".red.x");
this.redy = settings.getConfig().getDouble("arenas." + number + ".red.y");
this.redz = settings.getConfig().getDouble("arenas." + number + ".red.z");
}

I get a NullPointerException on the World line.

Code:

03.12 17:02:26 [Server] INFO at me.pogostick29.skyball.Arena.<init>(Arena.java:34)
03.12 17:02:26 [Server] INFO at org.bukkit.craftbukkit.CraftServer.getWorld(CraftServer.java:794)
03.12 17:02:26 [Server] INFO Caused by: java.lang.NullPointerException

And here's the config:

Code:

#
# This number is used by the plugin. Don't touch it!
numberofarenas: 1
general:
  amntofsnowballs: 20
  compassesenabled: true
  playersneededtobegin: 10
  countdowntime: 10
arenas:
  '1':
    world: HG3
    red:
      x: -481.98378981778393
      y: 65.0
      z: -3.4770826273233766
    blue:
      x: -482.1985902381851
      y: 65.0
      z: 13.08312643016882
lobbyspawn:
  world: HG3
  x: -488.28058628065054
  y: 65.0
  z: 4.863518905960773

 

Please repost in DEV section.

 

Oh, wow, wrong forum.
Sorry about that.
TnT delete this, I'll make a new thread in the Dev section.