404 Not Found

<?php
header('Access-Control-Allow-Origin: *');
require_once 'admin/dbconnection.php';
error_reporting(0);

$url = $_GET['url'];
$row1 = mysqli_query($con, "select * from news_events where news_url= '$url'");
$row2 = mysqli_fetch_array($row1);
// print_r($row2);exit;

$id = $row2['id'];
$title = $row2['title'];
$description = $row2['description'];
$thump_image = $row2['thump_image'];
$gal_img = $row2['gal_img'];
$news_content = $row2['news_content'];
// echo $blog_content;

$pagetitle = "Events- ". ucwords($title);
$pageImage = $thump_image;
require 'header.php';

<div class="row">
        <ol class="breadcrumb">
            <li><a href="<?php echo $baseUrl; ?>">Home</a></li>
            <li><a href="<?php echo $baseUrl; ?>news-and-events.php">News</a></li>
            <li class="current"><?php echo ucwords($pagetitle); ?></li>
        </ol>
        </div>

<img src="<?php echo $thump_image; ?>" class="img-fluid"><br><br>

<?php
echo $news_content;
?>

</div>
                    <div class="col-lg-4 col-md-4">
                        <div class="blog-side">
                           <h5>Recent News</h5>
                           <?php
$result = $con->query("SELECT * FROM news_events WHERE status='active' order by id desc limit 3");
while ($row = $result->fetch_assoc()) {
    $title_r = $row['title'];
    $thump_image_r = $row['thump_image'];
    $url_r = $row['news_url'];
    ?>
                           <div class="blog-side-box">
                            <a href="<?php echo $baseUrl; ?>news/<?php echo $url_r; ?>">
                           <img src="<?php echo $thump_image_r; ?>" class="img-fluid">
                           <h6><?php echo ucwords($title_r); ?></h6>
                            </a>
                           </div>
                           <?php
}
?>
                        </div>
                    </div>

</div>
            </div>
        </section>

<?php require 'footer.php';?>

function showTimelineBlock() {
  var listNumber = $('.timeline li').index(this);
  var left = listNumber * -100;
  $('.timeline-blocks').animate({ marginLeft: left + '%'}, 500);
  $(".timeline li").removeClass("timeline-active");
  $(this).addClass('timeline-active');
};

function nextTimeline () {
  $('.timeline-active').removeClass('timeline-active').next().addClass('timeline-active');
  $('.timeline-blocks').animate({ marginLeft: "+=-100%"}, 500);
};

function prevTimeline () {
  $('.timeline-active').removeClass('timeline-active').prev().addClass('timeline-active');
  $('.timeline-blocks').animate({ marginLeft: "+=100%"}, 500);
};</script>