Fatal error: Uncaught Error: Interface "PhpOffice\Math\Writer\WriterInterface" not found in /var/www/binary/vendor/phpoffice/math/src/Math/Writer/OfficeMathML.php:10 Stack trace: #0 {main} thrown in /var/www/binary/vendor/phpoffice/math/src/Math/Writer/OfficeMathML.php on line 10