Fatal error: Uncaught Error: Class 'PhpOffice\PhpSpreadsheet\Worksheet\CellIterator' not found in /home/dvidiv74/public_html/comp-life/PhpSpreadsheet-master/src/PhpSpreadsheet/Worksheet/RowCellIterator.php:8 Stack trace: #0 {main} thrown in /home/dvidiv74/public_html/comp-life/PhpSpreadsheet-master/src/PhpSpreadsheet/Worksheet/RowCellIterator.php on line 8