New world is loaded. and yet can't teleport to it

I've tested it and know for a fact that my world 'chickens' is loaded. I don't get any NPE so it is definitely loaded and it is in my list of worlds when I do Bukkit.getWorlds();
What is wrong? Thanks in advance!

Code:java

package me.shinobuattack.getthechickens;
 
import java.util.logging.Logger;
 
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.World;
import org.bukkit.WorldCreator;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;
 
public class GetTheChickens extends JavaPlugin{
 
    private static final Logger log = Logger.getLogger("Minecraft");
 
    @Override
    public void onDisable(){
        log.info("Plugin disabled.");
    }
 
    @Override
    public void onEnable(){
        log.info("Plugin enabled.");
        World world = Bukkit.getWorld("chickens");
        if(world == null){
            WorldCreator creator = new WorldCreator("chickens");
            creator.environment(World.Environment.NORMAL);
            creator.generateStructures(true);
            world = creator.createWorld();
        }
    }
 
    public boolean onCommand(CommandSender sender, Command cmd, String commandLbl, String[] arg){
        Player player = (Player)sender;
        World world = Bukkit.getWorld("chickens");
        if (player instanceof Player){
            if(commandLbl.equalsIgnoreCase("warp")){
                if(arg.length == 0){
                    player.sendMessage(ChatColor.RED + "/warp <world>");
                }else if(arg.length == 1){
                    //World chickens = this.getServer().createWorld(new WorldCreator(this.getConfig().getString("chickens")));
                    if(arg[0] == "chickens"){
                        player.sendMessage("Teleporting...");
                        //World world = Bukkit.getWorld("chickens");
                        if(world == null){
                            WorldCreator creator = new WorldCreator("chickens");
                            creator.environment(World.Environment.NORMAL);
                            creator.generateStructures(true);
                            world = creator.createWorld();
                        }
                        System.out.print("chickens = " + world);
                        player.sendMessage("chickens = " + world);
                        player.teleport(world.getSpawnLocation());
 
                    }
                }
            }else if(commandLbl.equalsIgnoreCase("world")){
                player.sendMessage("chickens = " + world.getName());
                player.sendMessage("Current world: " + player.getWorld().getName());
                player.sendMessage("World List: " + Bukkit.getWorlds());
            }
        }
        return false;
    }
}