Google Unicode Fonts not rendered properly in mpdf for PHP

Question

I want to use Baloo2 Google Font in mpdf to render the Hindi Language.

I'm trying to render the following:

चातुर्यकला त्रिवेदी
But it is rendered as
चातुर् यकला त् रविदी

 

The Code in my file is:

$html = ' आवेदक का नाम  : चातुर्यकला त्रिवेदी';
$filename = 'demofile' . time() . '.pdf';
$mpdf = new \Mpdf\Mpdf([
   'mode' => 'utf-8',
   'default_font' => 'baloo',
]);
   $mpdf->debug = true;
   $mpdf->WriteHTML("p, td {font-family: baloo; color: transparent; white-space: pre; cursor: text; transform-origin: 0% 0%;}", 1);
$mpdf->WriteHTML($html);
$mpdf->Output($filename, 'D');

I've also copied the fonts in the ttfonts directory and also made changes to the fontVariables.php files as follows:

'fontdata' => [    
        "baloo" => [
          'R' => "BalooRegular.ttf",
          'useOTL' => 0xFF,
          'useKashida' => 75,
        ]...
    ];

But I am getting this error in return:

GPOS Lookup Type 5, Format 3 not supported (ttfontsuni.php)

Can someone please help me with this?