20 Read Sylk

15:12:07 Read Slk format from /home/bitrix/ext_www/retender.ru/export/samples/Basic/../templates/SylkTest.slk in 1.0438 seconds

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