Maybe error in bukkit ?

Hi I am trying to get a World from a string in a configuration file, everything works fine, but when I try to get a world it said that :Name cannot be null, I am getting it like this, I believe that is error in bukkit.

Code:java

configFile2 = new File(pluginFolder, "arenas.yml");
arenas = new YamlConfiguration();
if(!pluginFolder.exists()){
try{
pluginFolder.mkdir();
  }catch(Exception ex){
  }
 
 
 
World world = Bukkit.getWorld(arenas.getString(getArena(p) + ".exit.exit.world")); //returns null
 
arenas.getString(getArena(p) + ".exit.exit.world"); //also returns null
 
 
 
getArena(p); //returns the name of arena in which is player joined 

file arenas.yml:

Code:

Arena: 
  exit:
    exit:
      x: 2.9751548445806115
      y: 68.0
      z: 5.330786024127412
      yaw: 13.127258
      pitch: 28.049786
      world: Azeroth

 

What does getArena(p) do? Could you post that code?

 

Sorry it was my stupid mistake.