Fatal error: Uncaught Error: Class "PhpOffice\PhpSpreadsheet\Spreadsheet" not found in /home/eregistrandocom/public_html/vendor/phpoffice/phpspreadsheet/tests/PhpSpreadsheetTests/Reader/Xlsx/MySpreadsheet.php:9 Stack trace: #0 {main} thrown in /home/eregistrandocom/public_html/vendor/phpoffice/phpspreadsheet/tests/PhpSpreadsheetTests/Reader/Xlsx/MySpreadsheet.php on line 9