php - Class 'Mpdf\Mpdf' not found error in Phpspreadsheet

Question

I'm trying to convert excel file directly to PDF with the help of PHPSpreadsheet. but got an error "Class 'Mpdf\Mpdf' not found", Here is my code:

<?php 
  require 'vendor/autoload.php';
  use PhpOffice\PhpSpreadsheet\IOFactory;
  use PhpOffice\PhpSpreadsheet\Worksheet\PageSetup;
  use PhpOffice\PhpSpreadsheet\Reader\Xlsx;
  use PhpOffice\PhpSpreadsheet\Writer\Pdf\Mpdf;

  $reader = new \PhpOffice\PhpSpreadsheet\Reader\Xlsx();
  $reader->setReadDataOnly(true);
  $spreadsheet = $reader->load("excel.xlsx");


  // when I use this MPDF class, I'm getting an error Class \Mpdf\Mpdf not found

  $writer = new \PhpOffice\PhpSpreadsheet\Writer\Pdf\Mpdf($spreadsheet);
  $writer->save("excel.pdf");

Kindly Help with above code.

Thanks

Answer 1

From the documentation of phpspreadsheet:

You must now install a PDF rendering library yourself; but PhpSpreadsheet will work with a number of different libraries.

The error comes from not installing the rendering library you want to use (in this case mPDF). Just add mpdf/mpdf to your composer dependencies.