array(1) {
  [0]=>
  string(29) "PDFb-5584-BENETEAU_OCEANIS-46"
}
<div style="font:12px/1.35em arial, helvetica, sans-serif;">
    <div style="margin:0 0 25px 0; border-bottom:1px solid #ccc;">
        <h3 style="margin:0;font-size:1.7em;font-weight:normal;text-transform:none;text-align:left;color:#2f2f2f;">
        Autoload error</h3>
    </div>
    <p>FPDF error: Some data has already been output, can't send PDF file</p>
</div>