40 Duplicate style

19:06:32 Create new Spreadsheet object
19:06:32 Create styles array
19:06:32 Add data (begin)
19:06:34 Add data (end) . time: 2 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