Fatal error: Uncaught Error: Class 'PHPExcel_Shared_File' not found in D:\xampp_php7.2\htdocs\gumonder_tablet\action\PHPExcel\Shared\ZipArchive.php:4 Stack trace: #0 {main} thrown in D:\xampp_php7.2\htdocs\gumonder_tablet\action\PHPExcel\Shared\ZipArchive.php on line 4