syntax error, unexpected identifier "Closure", expecting variable in /PhpSpreadsheet/vendor/maennchen/zipstream-php/src/ZipStream.php

[4n54n]

The following PhpSpreadsheet code is working properly on localhost but not on live server.

THE ISSUE IS : save('php://output'); is not downloading the xlsx file.

PhpSpreadsheet Version : 1.29.0

PHP version :
localhost : 8.1.6
live server : 8.0.28

<?php


require('PhpSpreadsheet/vendor/autoload.php');



use PhpOffice\PhpSpreadsheet\IOFactory;
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Style\Alignment;
use PhpOffice\PhpSpreadsheet\Style\Fill;
use PhpOffice\PhpSpreadsheet\Style\Border;


// WORKSHEET 1



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


$spreadsheet->getDefaultStyle()->getFont()->setName('Calibri')->setSize(9);


$sheet->getColumnDimension('A')->setWidth(40);
$sheet->getColumnDimension('B')->setWidth(40);
$sheet->getColumnDimension('C')->setWidth(20);
$sheet->getColumnDimension('D')->setWidth(20);
$sheet->getColumnDimension('E')->setWidth(20);
$sheet->getColumnDimension('F')->setWidth(20);
$sheet->getColumnDimension('G')->setWidth(40);



$sheet->setCellValue('A1', 'UNREAL');


$writer = IOFactory::createWriter($spreadsheet, 'Xlsx');


header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Disposition: attachment; filename="spreadsheet.xlsx"');
header('Cache-Control: max-age=0');


$writer->save('php://output');

I changed : $writer = IOFactory::createWriter($spreadsheet, 'Xlsx'); to Html
and
filename="spreadsheet.xlsx" to spreadsheet.html

which is working fine ( file spreadsheet.html got downloaded )
But I want xlsx format.

[4n54n]

Issue got solved after using php 8.1