Can't load pdf with using Mpdf in Codeigniter 4

I have been using Mpdf in my CI 3 projects and tested it in CI 4.  The method I used was as below:

I installed Mpdf via composer.

Then I created my own helper function to create the Mpdf object.  I needed to add custom fonts hence the additional code prior to obtaining the Mpdf object.

The Helper function definition

PHP Code:

function myPdf( $orientation ) {

   $defaultFontConfig = ( new Mpdf\Config\FontVariables() )->getDefaults();
   $fontData          = $defaultFontConfig[ 'fontdata' ] + [
         'homemadeapple'        => [
            'R' => 'HomemadeApple-Regular.ttf',
         ],
         'roboto'          => [
            'R'  => 'Roboto-Regular.ttf',
            'I'  => 'Roboto-Italic.ttf',
            'B'  => 'Roboto-Bold.ttf',
            'BI' => 'Roboto-BoldItalic.ttf',
         ],
         'robotocondensed' => [
            'R'  => 'RobotoCondensed-Regular.ttf',
            'I'  => 'RobotoCondensed-Italic.ttf',
            'B'  => 'RobotoCondensed-Bold.ttf',
            'BI' => 'RobotoCondensed-BoldItalic.ttf',
         ],
      ];
   $defaultConfig     = ( new Mpdf\Config\ConfigVariables() )->getDefaults();
   $fontDirs          = $defaultConfig[ 'fontDir' ];
   if ( $orientation == 'L' ) {
      $myPdf = new \Mpdf\Mpdf(
         array(
            'format'   => 'A4-L', 
            'margin_left' => 10, 
            'margin_right' => 10, 
            'margin_top' => 30, 
            'margin_bottom' => 20, 
            'margin_header' => 8, 
            'margin_footer' => 8, 
            'orientation' => 'L', 
            'mode' => 's',
            'fontDir'  => array_merge( $fontDirs, [ FCPATH . 'public/assets-app/fonts', ] ),
            'fontdata' => $fontData,
         ) );
   }
   else {
      $myPdf = new \Mpdf\Mpdf( array(
         'format'        => 'A4-P',
         'margin_left'   => 20,
         'margin_right'  => 10,
         'margin_top'    => 40,
         'margin_bottom' => 20,
         'margin_header' => 8,
         'margin_footer' => 8,
         'orientation'   => 'P',
         'mode'          => 's',
         'fontDir'       => array_merge( $fontDirs, [ FCPATH . 'public/assets-app/fonts', ] ),
         'fontdata'      => $fontData,
      ) );
   }

   return $myPdf;

} 


Usage in a controller:

PHP Code:

   public function testPdf() {
      $pdf = myPdf('P');

      $pdf->writeHTML( "Hello World" );

      $pdf->Output( FCPATH . "writable/uploads/test.pdf", 'F');

      return redirect()->to( site_url('/') );

   } 


In my opinion mPdf works extremely well when taking an HTML block and sending it to writeHTML.  I found it much simpler and easier to use than for example tcpdf.

Regards
Dirk B.

Dirk B.
ESD Digital
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