Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Writer\BaseWriter' not found in /var/www/html/portal/vendor/PhpOffice/phpspreadsheet/src/PhpSpreadsheet/Writer/Xls.php:31
Stack trace:
#0 {main}
thrown in /var/www/html/portal/vendor/PhpOffice/phpspreadsheet/src/PhpSpreadsheet/Writer/Xls.php on line 31