Problem in exporting data array to xlsx file using PhpSpreadsheet

Hello everyone in my project, I am trying to export data from database to an xlsx file but I am not getting correct data.I have attached image of data.

I am using the following code.

    use PhpOffice\PhpSpreadsheet\Spreadsheet;
    use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
    use PhpOffice\PhpSpreadsheet\Writer\Xls;

    $conn = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);

    $exportArray = array();
    $query = mysqli_query($conn, "select * from table");

    if(mysqli_num_rows($query) > 0){

            while ($row = mysqli_fetch_assoc($query)) {

                    $exportArray[$exp]['id'] = $row['id'];
                    $exportArray[$exp]['name'] = $row['name'];
                    $exportArray[$exp]['address'] = $row['address'];

                    $exp++;

            }

    }
    $array = array();

    $spreadsheet = new Spreadsheet();
    $sheet = $spreadsheet->getActiveSheet();

    $sheet->setCellValue('A1', 'id');
    $sheet->setCellValue('B1', 'name');
    $sheet->setCellValue('C1', 'address');

    $rowCount = 2;
    foreach ($exportArray as $value) {

        $sheet->setCellValue('A' . $rowCount, $value['id']);
        $sheet->setCellValue('B' . $rowCount, $value['name']);
        $sheet->setCellValue('C' . $rowCount, $value['address']);
        $rowCount++;
    }

    $fileName = 'test123.xls';
    $writer = new \PhpOffice\PhpSpreadsheet\Writer\Xlsx($spreadsheet);
    header('Content-Type: application/vnd.ms-excel');
    header('Content-Disposition: attachment;filename="'. $fileName .'.xlsx"'); 
    header('Cache-Control: max-age=0');
    $writer->save('php://output');
    exit();

When I see the sheet data using below code

$sheetData = $sheet->toArray(null, true, true, true);

print_r($sheetData);

I am getting the right output. Everything looks fine but I don't understand, why am I getting data in wrong format in sheet?

Add this use PhpOffice\PhpSpreadsheet\IOFactory;

Now use the following code to export data in Xlsx format

header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment;filename="test.xlsx"');
header('Cache-Control: max-age=0');
header('Cache-Control: max-age=1');
header('Cache-Control: cache, must-revalidate');
header('Pragma: public');

$writer = IOFactory::createWriter($spreadsheet, 'Xlsx');
$writer->save('php://output');