php with ajax in form input data update - php

Question

Id how I post, I did not understand the logic.
Why doesn't it update? no error message, please help me!
i don't understand much of ajax. :(
. . . .
index.php
<?php
require "header.php";
$con= mysqli_connect("localhost","root","","propanel_001");
mysqli_set_charset($con, 'utf8');
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
mysqli_close($con);
}
$gelen_id=#$_GET['id'];
$sql="SELECT * FROM tb_haber where id='$gelen_id'";
$result=mysqli_query($con,$sql);
$row=mysqli_fetch_assoc($result);
?>
<form id="my_form">
<label>Haber Başlığı</label>
<input value="<?php echo $row['haber_title'] ?>" type="text" name="haber_title">
<label>Haber İçeriği</label>
<textarea name="haber_desc" class="ckeditor text-justify"><?php echo $row['haber_desc'];?></textarea>
<button type="submit" name="btn_haber_update">UPDATE</button>
</form>
<script>
$(document).ready(function(){
$("form[id=my_form]").submit( function(up_haber) {
for (instance in CKEDITOR.instances) {
CKEDITOR.instances[instance].updateElement();
}
var form_data = new FormData(this);
SwalUp_Haber(form_data);
up_haber.preventDefault();
});
});
function SwalUp_Haber(form_data){
$.ajax({
url: "update-haber.php",
type: "POST",
data: form_data,
dataType: "json",
contentType: false,
cache: false,
processData: false,
})
.always(function(response_up_haber) {
swal({
title: response_up_haber.titles,
text: response_up_haber.message,
type: response_up_haber.status,
showConfirmButton: false,
timer:3000,
});
});
}
</script>
update-haber.php
<?php
header('Content-type: application/json; charset=UTF-8');
$response_up_haber = array();
$id_haber_up = $_GET['id'];
$haber_title = mysqli_real_escape_string($con, $_POST['haber_title']);
$haber_desc = mysqli_real_escape_string($con, $_POST['haber_desc']);
$query = "UPDATE tb_haber SET haber_title='$haber_title', haber_desc='$haber_desc' where id='$id_haber_up'";
$update=mysqli_query($con, $query);
if ($update>0) {
$response_up_haber['status'] = 'success';
$response_up_haber['titles'] = 'BAŞARILI';
$response_up_haber['message'] = 'Haber başarılı bir şekilde güncellendi..!';
}else{
$response_up_haber['status'] = 'error';
$response_up_haber['titles'] = 'HATA';
$response_up_haber['message'] = 'Bir sorun oluştu ...
<br>Lütfen bu durumu ProPANEL yetkililerine bildirin..!';
}
echo json_encode($response_up_haber);
?>