15 Datavalidation

23:34:16 Create new Spreadsheet object
23:34:16 Set document properties
23:34:16 Add data
23:34:16 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