Fatal error: Uncaught Error: Class 'PhpOffice\PhpPresentation\Writer\AbstractWriter' not found in /var/www/html/scorm/vendor/phpoffice/phppresentation/src/PhpPresentation/Writer/PowerPoint2007.php:36 Stack trace: #0 {main} thrown in /var/www/html/scorm/vendor/phpoffice/phppresentation/src/PhpPresentation/Writer/PowerPoint2007.php on line 36