Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Worksheet\CellIterator' not found in C:\xampp\htdocs\reservation\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Worksheet\ColumnCellIterator.php:9
Stack trace:
#0 {main}
thrown in C:\xampp\htdocs\reservation\vendor\phpoffice\phpspreadsheet\src\PhpSpreadsheet\Worksheet\ColumnCellIterator.php on line 9