Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Writer\Html" not found in /home/romafi/cofortest/php/php-spreadsheet/src/PhpSpreadsheet/Writer/Pdf.php:10 Stack trace: #0 {main} thrown in /home/romafi/cofortest/php/php-spreadsheet/src/PhpSpreadsheet/Writer/Pdf.php on line 10