Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Cell\DataType' not found in /var/www/html/lib/php-spreadsheet/tests/data/Cell/SetValueExplicit.php:9 Stack trace: #0 {main} thrown in /var/www/html/lib/php-spreadsheet/tests/data/Cell/SetValueExplicit.php on line 9