Warning: Unsupported declare 'strict_types' in D:\xampp\htdocs\prdk-wb-be\vendor\nikic\php-parser\lib\PhpParser\Node\Arg.php on line 1

Parse error: syntax error, unexpected '?', expecting variable (T_VARIABLE) in D:\xampp\htdocs\prdk-wb-be\vendor\nikic\php-parser\lib\PhpParser\Node\Arg.php on line 9