error

<!DOCTYPE html>
<html>
<head>
    <title>Tampil Buku</title>
</head>
<body>
<?php
$koneksi=mysql_connect("localhost","root","agung_110793")or die());
mysql_select_db("Kampus_db_berita");
$Tampil="select*from buku_tamu ORDER BY Id";
$query=mysql_query($Tampil)or die("gagal".mysql_error());
$jumlah=mysql_num_rows($query);

while ($row=mysql_fetch_array($query)) {
    $id=$row["Id"];
    $nama=$row["Nama"];
    $email=$row["Email"];
    $pesan=$row["Pesan"];
}

?>

<table border="1" align="center">
    <tr>
        <th colspan="5"><h1>DATA BUKU TAMU</h1></th>
    </tr>
    <tr>
        <th>No</th>
        <th>Nama</th>
        <th>Email</th>
        <th>Pesan</th>
        <th>Action</th>
    </tr>
    <tr>
        <td><?php echo $Id; ?> </td>
        <td><?php echo $nama; ?> </td>
        <td><?php echo $email; ?> </td>
        <td><?php echo $pesan; ?> </td>
        <td></td>
    </tr>
</table>
</body>
</html>