Gagal eksport data ke pdf

Pesan Errornya

Codenya:

<?php ob_start(); ?>

<style type="text/css">
  table.page_header {width: 1020px; border: none; background-color: #3C8DBC; color: #fff; border-bottom: solid 1mm #AAAADD; padding: 2mm }
  table.page_footer {width: 1020px; border: none; background-color: #3C8DBC; border-top: solid 1mm #AAAADD; padding: 2mm }
  h1 {color: #000033}
  h2 {color: #000055}
  h3 {color: #000077}
  img { width: 70px; }
</style>

  <style type="text/css">
  .tabel2 {
    border-collapse: collapse;
    margin-left: 20px;
  }
  .tabel2 th, .tabel2 td {
      padding: 5px 5px;
      border: 1px solid #959595;
  }

  img { width: 70px; }

   div.kanan {
     width:300px;
   float:right;
     margin-left:250px;
     margin-top:-140px;
  }

  div.kiri {
    width:300px;
    float:left;
    margin-left:20px;
    display:inline;
  }
  </style>

  <?php
    include '../fungsi/koneksi.php';
   ?>
  <table>
    <tr>
      <th rowspan="3"><img src="../gambar/kam.png" style="width:100px;height:100px" /></th>
      <td align="center" style="width: 520px;"><font style="font-size: 18px"><b>PT. KINARYA ALIHDAYA MANDIRI <br> AREA PAMASUKA WILAYAH MAKASSAR</b></font>
      <br><br>Jl. A.Pettarani No. 18 A7-A9 RT 001/RW 006 Kelurahan Tamamaung Kecamatan Panakkukang, Makassar<br> Telp : (0711) 355089 | Fax : (0711) 355180</td>
    <th rowspan="3"><img src="../gambar/kam.png" style="width:100px;height:80px" /></th>
    </tr>
  </table>
  <hr>
  <p align="center" style="font-weight: bold; font-size: 18px;"><u>DATA PELAMAR KERJA</u></p>
  <table class="tabel2">
    <thead>
      <tr>
        <td style="text-align: center; "><b>No.</b></td>
        <td style="text-align: center; "><b>ID Pelamar</b></td>
        <td style="text-align: center; "><b>Gambar</b></td>
        <td style="text-align: center; "><b>Nama Lengkap</b></td>
        <td style="text-align: center; "><b>Alamat</b></td>
        <td style="text-align: center; "><b>Nomor Handphone</b></td>
        <td style="text-align: center; "><b>Posisi</b></td>
      </tr>
    </thead>
    <tbody>
      <?php

      include "../fungsi/koneksi.php";
      $no   = 1;
      $query=mysqli_query($koneksi, "select * from data_pelamar");
      while($data=mysqli_fetch_array($query)){
      ?>
      <tr>
        <td style="text-align: center; width=15px;"><?php echo $no; ?></td>
        <td style="text-align: center; width=70px;"><?php echo $data['id_datapelamar']; ?></td>
        <td style="text-align: center; width=70px;"><img src="../admin_pengganti/foto.jpg/'<?php echo $data['gambar_pelamar']; ?>'"></td>
        <td style="text-align: center; width=70px;"><?php echo $data['name']; ?></td>
        <td style="text-align: center; width=120px;"><?php echo $data['address']; ?></td>
        <td style="text-align: center; width=70px;"><?php echo $data['handphone']; ?></td>
        <td style="text-align: center; width=50px;"><?php echo $data['posisi_dituju']; ?></td>
      </tr>
    <?php
    $no++;
    }
    ?>
    </tbody>
  </table>

  <div class="kiri">
      <p>Mengetahui :<br>Manajer KAM</p>
      <br>
      <br>
      <br>
      <p><b><u>Trisno Putro</u><br>NIK : 197810170371</b></p>
  </div>

  <div class="kanan">
      <p>Mengetahui :<br>Admin Koordinator Lapangan</p>
      <br>
      <br>
      <br>
      <p><b><u>Rezky Septyawati</u><br>NIK : B0819052</b></p>
  </div>

<!-- Memanggil fungsi bawaan HTML2PDF -->
<?php
$content = ob_get_clean();
 include '../assets/html2pdf/html2pdf.class.php';
 try
{
    $html2pdf = new HTML2PDF('P', 'A4', 'en', false, 'UTF-8', array(10, 10, 4, 10));
    $html2pdf->pdf->SetDisplayMode('fullpage');
    $html2pdf->writeHTML($content);
    $html2pdf->Output('data_pelamar.pdf');
}
catch(HTML2PDF_exception $e) {
    echo $e;
    exit;
}
?>