Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Reader\XlsBase" not found in /home/fiberconfig/fcm.fiberconfig.com/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Reader/Xls.php:63 Stack trace: #0 {main} thrown in /home/fiberconfig/fcm.fiberconfig.com/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Reader/Xls.php on line 63