Warning: Unsupported declare 'strict_types' in C:\xampp\htdocs\monitor\vendor\nikic\php-parser\lib\PhpParser\NodeVisitorAbstract.php on line 1

Fatal error: Interface 'PhpParser\NodeVisitor' not found in C:\xampp\htdocs\monitor\vendor\nikic\php-parser\lib\PhpParser\NodeVisitorAbstract.php on line 9