Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\DefinedName' not found in /var/www/html/portal/vendora/phpoffice/phpspreadsheet/src/PhpSpreadsheet/NamedFormula.php:7 Stack trace: #0 {main} thrown in /var/www/html/portal/vendora/phpoffice/phpspreadsheet/src/PhpSpreadsheet/NamedFormula.php on line 7