Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Reader\Xlsx\BaseParserClass' not found in /var/www/html/portal/phpspreadsheet_exc/src/PhpSpreadsheet/Reader/Xlsx/Styles.php:18 Stack trace: #0 {main} thrown in /var/www/html/portal/phpspreadsheet_exc/src/PhpSpreadsheet/Reader/Xlsx/Styles.php on line 18