Warning: Unsupported declare 'strict_types' in D:\xampp\htdocs\wsdemo\vendor\phpunit\php-timer\src\RuntimeException.php on line 1

Fatal error: Interface 'SebastianBergmann\Timer\Exception' not found in D:\xampp\htdocs\wsdemo\vendor\phpunit\php-timer\src\RuntimeException.php on line 14