Console logs upon crash

package vexmc.practiceplugin.events;

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

import com.connorlinfoot.actionbarapi.ActionBarAPI;

public class EventsClass implements Listener {

    public int playerLevel = 1;

    @EventHandler
    public void onJoin(PlayerJoinEvent event) {
        Player player = event.getPlayer();

        while(playerLevel >= 1) {
            ActionBarAPI.sendActionBar(player, ChatColor.YELLOW + "" + ChatColor.BOLD + "<<< " + ChatColor.GOLD + ""+ ChatColor.BOLD + playerLevel + ChatColor.YELLOW + "" + ChatColor.BOLD + ">>>");
        }
    }
}