Using MPDF version 6.0

Previously i used mpdf version 8.6.For that i used laravel framework 5.4, Top of controller

use mPDF\mPdf;

In Controller constructor,

 $mpdf = new mpdf(['tempDir' => __DIR__ . '/custom/temp/dir/path']);

In function used

 $mpdf = new mpdf();                   

  $mpdf->SetHTMLHeader($this->header($data),'1', true);

  $mpdf->SetHTMLFooter($this->footer());

  $mpdf->AddPage('p','','','','',10,10,37,20,10,10);

   $mpdf->WriteHTML($html);

   $mpdf->Output();

Due to my server version 5.6 i have to use mpdf 6.1.0 version. For that version using the same code i get error

via Chebli Mohamed