tcpdf-laravel: tcpdf.php throws error if HTML has 2 HREFs in it

I am using Laravel 5.3 and the current version of this wrapper. Not sure if this is an error in this wrapper, or the underlying library for tcpdf. But I think it is this wrapper because I am converting a static app to laravel and tcpdf works in my static app, and also, the tcpdf example pages have html data with multiple links in it.

I have now tested this in many ways, and if I have HTML data to convert to pdf that has 2 links in the data e.g. something like this:

<p>Lorem ipsum dolor sit amet <a href="http://www.somelink.com/">link</a>
consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et 
dolore magna aliqua <a href="http://www.somelink2.com/">link2</a> etc...</p>

I always get a failure throwing the error: ErrorException in tcpdf.php line 18807: Illegal string offset 'url'

But, if I have HTML data with just one href link in it, the PDF resolves fine.

Line 18807 in tcpdf.php is:

$this->HREF['url'] = $tag['attribute']['href'];

The code near there in tcpdf.php is:

case 'a': {
    if (array_key_exists('href', $tag['attribute'])) {
	$this->HREF['url'] = $tag['attribute']['href'];
    }
    break;
}

I do not think this will matter, but my PDF generating code (sans the actual html) is:

      PDF::SetTitle('Title of PDF');
      PDF::SetFont('times', '', 11);
      PDF::AddPage();
      $image = public_path().'/images/logo.jpg';
      PDF::Image($image,
        $x = '10',
        $y = '10',
        $w = 75,
        $h = 0,
        $type = 'JPG',
        $link = '',
        $align = 'N',
        $resize = false,
        $dpi = 300,
        $palign = 'L',
        $ismask = false,
        $imgmask = false,
        $border = 0,
        $fitbox = false,
        $hidden = false,
        $fitonpage = false,
        $alt = false,
        $altimgs = array());
      PDF::WriteHTML($docbody);
      PDF::writeHTMLCell(120, 0, '', '', $html, '', 1, 0, true, 'R', true);
      $attachment = storage_path().'/filelocation/'.$var->name.'_'.date("F j, Y").'.pdf';
      PDF::Output($attachment,'FI');