Problem z napisaniem configu

Czesc, probowalem napisac config, ale cos mi nie wyszlo poda ktos blad?

package me.neroos.join;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;

import me.neroos.join.listeners.PlayerJoinListener;

public class Main extends JavaPlugin{
	
	private static Main instance;
    public static Integer allLoginAmount = getInst().getConfig().getInt("WszystkichLogowan");

    @Override
    public void onEnable(){
    	instance = this;
        this.getServer().getPluginManager().registerEvents(new PlayerJoinListener(), this);
        saveDefaultConfig();
    }

    @Override
    public void onDisable(){
        for(Player p : Bukkit.getOnlinePlayers()){
            p.kickPlayer("Restart.");
            Main.getInst().saveConfig();
        }
        Bukkit.shutdown();
    }
    
    public static Main getInst() {
    	return instance;
    }
}

package me.neroos.join.listeners;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;

import me.neroos.join.Main;
import me.neroos.join.util.ColorUtil;

public class PlayerJoinListener implements Listener {
	
    @EventHandler
    public void onJoin(PlayerJoinEvent event){
    	Player p = event.getPlayer();
        Main.getInst().getConfig().set("WszystkichLogowan", Main.allLoginAmount);
        Main.getInst().getConfig().getInt("WszystkichLogowan");
        Main.allLoginAmount++;
        event.getPlayer().sendMessage(ColorUtil.fixColor(""));
        event.getPlayer().sendMessage(ColorUtil.fixColor(""));
        event.getPlayer().sendMessage(ColorUtil.fixColor("    &6&oAktualnie na serwerze jest: &e&o" + Bukkit.getServer().getOnlinePlayers().length + " &e&ograczy&6&o!"));
        event.getPlayer().sendMessage(ColorUtil.fixColor("    &6&oWszystkich polaczen z serwerem: &e&o" + Main.getInst().getConfig().getInt("WszystkichLogowan") + " &e&opolaczen&6&o!"));
        event.getPlayer().sendMessage(ColorUtil.fixColor("    &6&oMilej gry, &e&o" + p.getName()));
        event.getPlayer().sendMessage(ColorUtil.fixColor(""));
        event.getPlayer().sendMessage(ColorUtil.fixColor(""));
        Main.getInst().saveConfig();
    }
}