I'm seeing this warning trying to use Parsedown 1.7.4 (latest stable, from what I can tell) on php 8.4. Seems like the fix is to just do `?array $Block = null` instead of `array $Block = null`? See https://github.com/erusev/parsedown/blob/1.7.x/Parsedown.php#L715