I am trying to fetch custom post related to a User. I am using below code.

$args = array(
            'post_type'     => 'tasks',
            'meta_query'    => array(
                'relation'  => 'AND',
                array(
                    'key' => 'users',
                    'id' => $user->ID,
                    'compare' => '=',
                ),
            ),
        );

        $query = new WP_Query($args);
        $posts = $query->posts;

But I am not getting any output.