Current code setup... Having an issue with it.

ChatCommandExc.java

package work;

import Utilities.ChatUtils;
import net.md_5.bungee.api.chat.TextComponent;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;



/**
 * Created by ES359 on 7/18/16.
 */
public class ChatCommandExc extends ChatUtils implements CommandExecutor {

    public boolean onCommand(CommandSender sender, Command cmd, String commandLabel, String args[])
    {
        
        if(!(sender instanceof Player))
        {
            sender.sendMessage(color("%prefix% &cConsole support not added."));
            return true;
        }

        Player p = (Player)sender;

        if(cmd.getName().equalsIgnoreCase("chat"))
        {
            logCommand(p, args);
            if(args.length < 1)
            {
                p.spigot().sendMessage( new TextComponent( "Hello world" ) );
            }
        }
        return true;
    }

}

http://imgur.com/Mi9C899 - Stacktrace.