Facing a Forbidden issue

This is the code


view file:- login.php
<form id="login" name="login" method="post" action="">
<input type="hidden" style="display:none;" value="<?php echo $this->security->get_csrf_hash();?>" name="csrf_test_name">
<div class=" row loginbox_content ">
<div class="display-error text-center"></div>
<br>
<div class="input-group input-group-sm">
<span class="input-group-addon">
<span class="glyphicon glyphicon-envelope"></span>
</span>
<input id="email" name="email" class="form-control" type="text" placeholder="Email" maxlength="60">
</div>
<br>
<div class="input-group input-group-sm">
<span class="input-group-addon">
<span class="glyphicon glyphicon-lock"></span>
</span>
<input id="password" name="password" class="form-control" type="password" placeholder="Password" maxlength="20">
</div>
<br>
<div class="input-group input-group-sm">
<label>
<input name="loginkeeping" id="loginkeeping1" value="loginkeeping" type="checkbox">
Remember Me
</label>
</div>
</div>
<div class="row ">
<div class="col-lg-8 col-md-8 col-sm-8 col-xs-7 forgotpassword ">
<a href="#" data-toggle="modal" data-target="#myModal">Forgot Password?</a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-5 ">
<button type ="submit" value="Submit" class="btn btn-default submit-btn">Submit <span class="glyphicon glyphicon-log-in"></span></button>
</div>
</div>
</form>


js file::
$.ajax({
method: "POST",
url: base_url+'Admin/User/login_authenticate',
data: {'email':email,'password':password,'remember':remember},
dataType: 'json',
success: function(result) {
if (result.error == 1) {
$(".display-error").html(result.msg);
$(".display-error").show();
$('.display-error').css('color','red');
$('.alert-success').attr('class','alert alert-danger');
}
else {
window.location.replace(base_url+"Admin/User/dashboard");
}

},
error: function(err){
console.log(err)
}
});



controller::
public function login_authenticate()
{
$email = xss_clean($this->input->post('email'));
$password = xss_clean($this->input->post('password'));
$type = ($this->input->post('type') != '' ) ? $this->input->post('type') : '';

if($email == '' || $password == ''){
$this->error();
}
else
{
$details = $this->Base_model->get_record_by_id('abc',array('email'=>$email,'present_role'=>1));
//set session
if($details)
{
//if user is blocked
if($details[0]['ustatus'] == '0'){

//json success message pass to custom.js
$res = array('msg' => 'You have been blocked by admin. Please contact to admin.', 'error' => 1);
print json_encode($res);
}
else{
$check_email_verify = $this->Base_model->check_existent('abc',array('email'=>$email,'email_verify'=>'1'));
if($check_email_verify){
if($this->bcrypt->check_password($password, $details[0]['password'])){

$login_data = array(
'uid' => $details[0]['uid'],
'email' => $details[0]['email'],
'password' =>$details[0]['password'],
'logged_in' => TRUE
);
$session_data = $this->session->set_userdata($login_data);

$remember = $this->input->post('remember');

//set cookies
if($remember == '1')
{
setcookie('email_cookie', $email, time()+3600*7, '/');
setcookie('password_cookie',$password, time()+3600*7,'/');
}
if($type != ''){
//json success message pass to custom.js
$res = array('msg' => 'redirect', 'error' => 0,);
print json_encode($res);
}else{
//json success message pass to custom.js
$res = array('msg' => 'Logged in successfully.', 'error' => 0,);
print json_encode($res);
}
}
else{
//json success message pass to custom.js
$res = array('msg' => 'Invalid user name and password.', 'error' => 1);
print json_encode($res);
}
}else{
//json success message pass to custom.js
$res = array('msg' => 'Please verify your email to login.Please check your email.', 'error' => 1,);
print json_encode($res);
}
}
}
else{
//json success message pass to custom.js
$res = array('msg' => 'Invalid user name and password.', 'error' => 1);
print json_encode($res);
}
}
}