Unable to fetch data using Meta key

I wanted to show user data of author of custom post using meta key using below code but this sin’t working, I checked and i didn’t able to find any meta_key data stored for user. but it showing in update profile page

function get_author_address() {
    global $post;
    $author_id = $post->post_author; // Get the author ID
    $address = get_user_meta($author_id, 'address', true); // Get the 'address' meta_key

    if (!empty($address)) {
        return $address;
    } else {
        return 'No address found for this author.';
    }echo $address;
}
add_shortcode('author_address', 'get_author_address');