404 Not Found

<?php
header('Access-Control-Allow-Origin: *');
require_once 'dbconnection.php';
error_reporting(0);
$imenu_active = "active";
include 'header.php';

<div class="container-fluid">

<h1 class="h3 mb-2 text-gray-800">Home SEO List</h1>
    <p>
        <?php
$s = "select * from index_seo";
$res = mysqli_query($con, $s);
$num = mysqli_num_rows($res);

// If there are no records, show the "Add SEO" button
if ($num == 0) {
    echo '<a href="indexseo-add.php" class="btn btn-success btn-icon-split">
                        <span class="icon text-white-50">
                            <i class="fas fa-check"></i>
                        </span>
                        <span class="text">Add SEO</span>
                    </a>';
}
?>
    </p>

<div class="card shadow mb-4">
        <div class="card-header py-3">
            
        </div>
        <div class="card-body">
            <div class="table-responsive">
                <table class="table table-bordered" id="dataTable" width="100%" cellspacing="0">
                    <thead>
                        <tr>
                            <th>Page Title</th>
                            <th>Meta Descritpion</th>
                            <th>Meta Tags</th>
                            <th>Action</th>
                        </tr>
                    </thead>
                    <tbody id="table_id">
                        <?php
$sql = "select * from index_seo";

$selected = mysqli_query($con, $sql);
while ($row = mysqli_fetch_array($selected)) {
    $id = $row['id'];
    $pagetitle = $row['pagetitle'];
    $metadescription = $row['metadescription'];
    $metatags = $row['metatags'];

echo "<tr>
                                <td>$pagetitle</td>
                                <td>$metadescription</td>
                                <td>$metatags</td>
                                <td style='white-space: nowrap;'>
                                    <a href='indexseo-edit.php?id=$id' class='btn btn-info btn-circle btn-sm'>
                                        <i class='fas fa-edit'></i>
                                    </a>
                                    &nbsp;
                                    <a class='btn btn-danger btn-circle btn-sm' onclick='deleteData($id)'>
                                        <i class='fas fa-trash'></i>
                                    </a>
                                </td>
                            </tr>";
}
?>
                    </tbody>
                </table>
            </div>
        </div>
    </div>

</div>

<?php include 'footer.php'?>