Warning: Unsupported declare 'strict_types' in /var/www/html/push-notification-service-v2/vendor/sebastian/type/src/exception/RuntimeException.php on line 1

Fatal error: Interface 'SebastianBergmann\Type\Exception' not found in /var/www/html/push-notification-service-v2/vendor/sebastian/type/src/exception/RuntimeException.php on line 13