15 Datavalidation

17:29:05 Create new Spreadsheet object
17:29:05 Set document properties
17:29:05 Add data
17:29:05 Set data validation

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