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

Parse error: syntax error, unexpected T_AS, expecting T_STRING in C:\xampp\htdocs\monitor\vendor\nikic\php-parser\lib\PhpParser\Builder\Use_.php on line 34