Fatal error: Uncaught Error: Class "ZipArchive" not found in D:\Webserver\Apache24\htdocs\mednet\vacinaeconfia\PHP_XLSXWriter-master\xlsxwriter.class.php:101 Stack trace: #0 D:\Webserver\Apache24\htdocs\mednet\vacinaeconfia\PHP_XLSXWriter-master\examples\ex02-formats.php(55): XLSXWriter->writeToFile('xlsx-formats.xl...') #1 {main} thrown in D:\Webserver\Apache24\htdocs\mednet\vacinaeconfia\PHP_XLSXWriter-master\xlsxwriter.class.php on line 101