How to fix PHP Parse error: syntax error, unexpected '?' in PHP SCRIPT

How to fix PHP Parse error: syntax error, unexpected '?' in vendor\laravel\framework\src\Illuminate\Foundation\helpers.php on line 500 Who knows what happened? I am also getting this error while deploying in server Just upgrade the php version into PHP 7.1 How to fix PHP Parse error LINK TO DOWNLOAD PHP VERSION 7.4.29 : https://sourceforge.net/projects/xampp/files/XAMPP%20Windows/ __________________________________________________ For Any Question Please Contact Me In Here : Visite Me : http://rachidcoding.web1337.net/ contact me : http://rachidcoding.web1337.net/#contact Email : [email protected] Buy Me A cafe : https://www.buymeacoffee.com/rachidsmarty