Fatal error: Uncaught PhpOffice\PhpSpreadsheet\Exception: Invalid cell coordinate 44 in /home/prestoda/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Cell/Coordinate.php:42 Stack trace: #0 /home/prestoda/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Cell/Coordinate.php(54): PhpOffice\PhpSpreadsheet\Cell\Coordinate::coordinateFromString('44') #1 /home/prestoda/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/Worksheet.php(1341): PhpOffice\PhpSpreadsheet\Cell\Coordinate::indexesFromString('44') #2 /home/prestoda/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/Worksheet.php(1242): PhpOffice\PhpSpreadsheet\Worksheet\Worksheet->createNewCell('44') #3 /home/prestoda/www/centretelechargement/index.php(292): PhpOffice\PhpSpreadsheet\Worksheet\Worksheet->getCell('44') #4 {main} thrown in /home/prestoda/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Cell/Coordinate.php on line 42