Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Reader\Xml\Style\StyleBase' not found in /var/www/app/appregwebservice/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Reader/Xml/Style/Font.php:8 Stack trace: #0 {main} thrown in /var/www/app/appregwebservice/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Reader/Xml/Style/Font.php on line 8