How to fix the thread error in Xcode?


I am newly in iOS development. I have error like this... "Thread 1: breakpoint 1.1". How to fix this error :

This is header(.h) file

   #import <UIKit/UIKit.h>

    @interface ViewController : UIViewController<UITextFieldDelegate>

    @property (weak, nonatomic) IBOutlet UITextField *passwordTextField;
    @property (weak, nonatomic) IBOutlet UITextField *usernameTextField;
    - (IBAction)tekan:(id)sender;


And this is implementation(.m) file

//  ViewController.m
//  Example1
//  Created by Andika Kurniawan on 10/6/14.
//  Copyright (c) 2014 Indonative. All rights reserved.

#import "ViewController.h"

@interface ViewController ()


@implementation ViewController

@synthesize passwordTextField;

- (void)viewDidLoad {
    [super viewDidLoad];
    self.passwordTextField.delegate = self;
    self.usernameTextField.delegate = self;

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.

- (IBAction)tekan:(id)sender {

    UIAlertView *helloEarthInputAlert = [[UIAlertView alloc]
                                         initWithTitle:@"Name!" message:[NSString stringWithFormat:@"Message: %@", passwordTextField.text]
                                         delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
    // Display this message.
    [helloEarthInputAlert show];

Above codes is my source code. I want to fix thread error, but I confuse... because I don't know what error which exist in my source code. Outlet and actions in this app haven't error

You dont have an error. You only have a break point. Press play in the debug menu (above the console and where you have the values in memory) and the app should continue the execution.