TCPDF - images are not showing up

Question

I'm trying to save a pdf with some data from database and some images. I can save normally but images are not showing up. $ft1, $ft2 and $ft3 are database variables with image's names.

Here is my test code:

    require_once('../tcpdf/config/lang/bra.php');
    require_once('../tcpdf/tcpdf.php'); 

    // create new PDF document
    $pdf = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);

    // set document information
    $pdf->SetCreator(PDF_CREATOR);
    $pdf->SetAuthor('Nicola Asuni');
    $pdf->SetTitle('TCPDF Example 006');
    $pdf->SetSubject('TCPDF Tutorial');
    $pdf->SetKeywords('TCPDF, PDF, example, test, guide');

    $pdf->setPrintHeader(false);
    $pdf->setPrintFooter(false);

    // set default monospaced font
    $pdf->SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);

    //set margins
    $pdf->SetMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);
    $pdf->SetHeaderMargin(PDF_MARGIN_HEADER);
    $pdf->SetFooterMargin(PDF_MARGIN_FOOTER);

    //set auto page breaks
    $pdf->SetAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM);

    //set image scale factor
    $pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);

    //set some language-dependent strings
    $pdf->setLanguageArray($l);

    // ---------------------------------------------------------

    // set font
    $pdf->SetFont('helvetica', '', 10);

    // add a page
    $pdf->AddPage();

    $html.= "<div><img src='../uploads/".$ft1."' width='200' height='400' /><br><br><img src='../uploads/".$ft2."' /><br><br><img src='../../uploads/".$ft3."' /></div>";

    $pdf->writeHTML($html, true, false, true, false, '');

    $pdf->lastPage();

    ob_clean();

    $pdf->Output('../uploads/'.$norepeat.'_relatorio_'.$idcontrato.'_'.formatDataJustNumbers($_POST['datarelatorio']).'.pdf', 'F');

Solution

Old post, but I came here looking for help:

Official documentation states that all HTML attributes must be enclosed with double quotes.

width='200' height='400'

Needs to be:

width="200" height="400"

in order for the images to show. That fixed it for me.

REFERENCE: https://tcpdf.org/docs/srcdoc/TCPDF/class-TCPDF/#_writeHTML