Zend certified PHP/Magento developer

Parse error: syntax error, unexpected ‘?’ in C:wamp64wwwMagento2vendorsymfonypolyfill-php72Php72.php on line 185

Getting this error when I am registering one extension.
Parse error: syntax error, unexpected ‘?’ in C:wamp64wwwMagento2vendorsymfonypolyfill-php72Php72.php on line 185