40 Duplicate style

15:16:57 Create new Spreadsheet object
15:16:57 Create styles array
15:16:57 Add data (begin)
15:17:02 Add data (end) . time: 5 s

Fatal error: Class 'XMLWriter' not found in /home/bitrix/ext_www/retender.ru/bitrix/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Shared/XMLWriter.php on line 5