Login Pages Error

[davy_yg]

This is to enter the admin page:
http://localhost/masterlinkci2/admin/

admin/views/login.php

<?php $this->load->library('form_validation'); ?>

<?php echo validation_errors(); ?>

<?php echo form_open('cpages/ceklogin'); ?>

<div class="login-card">

  <center><?php //echo $warning; ?>
  <?php echo $this->session->flashdata('warning'); ?>  
  </center>
    <h2>Gionda CMS Login</h2><br>
  <form>
    <div class="login"><input type="text" name="username" placeholder="Username"></div>
    <div class="login"><input type="password" name="password" placeholder="Password"></div>
    <br>
    <input type="submit" name="login" class="login login-submit" value="login">
  </form>

  <div class="login-help">
    <a href="#">Register</a> • <a href="#">Forgot Password</a>
  </div>
</div>

admin/controllers/cpages.php

    public function ceklogin() {

        $username = $this->input->post('username', TRUE);
        $password = $this->input->post('password', TRUE);
        $this->db->where('username', $username);
        $this->db->where('password', $password);
        $query=$this->db->get('login');
        if ($query->num_rows() >= 1)
             {
                // echo 'LOGIN BERHASIL !';

                $this->load->model('Mpages');
                $data['login']=$this->db->get('login');  
                $data['login']=$this->Mpages->login();
                $this->load->view('index', $data);
             }
        else
            {
                // echo 'LOGIN GAGAL !';

                $this->session->set_flashdata('warning', 'Your username and password are wrong !');

                //$data['warning']='Your username and password are wrong !';
                $this->load->view('login');
            }           

    } 

admin/models/Mpages.php

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Mpages extends CI_Model {

    public function __construct()
    {
        parent::__construct();

        $this->load->database();

    }

    public function login()
    {

        $query = $this->db->get('login');
        return $query->result();

    }

After entering password:

http://localhost/masterlinkci2/cpages/ceklogin

Object not found!

The requested URL was not found on this server. The link on the referring page seems to be wrong or outdated. Please inform the author of that page about the error.

If you think this is a server error, please contact the webmaster.

I wonder why?