Muhibul Haque

function use_author_link_as_comment_author_url( $url, $id, $comment ) {
    if ( $comment->user_id ) {
        return get_author_posts_url( $comment->user_id );
    }
    return $url;
}
add_filter( 'get_comment_author_url', 'use_author_link_as_comment_author_url', 10, 3 );

Can you please try above given code on functions.php file? I hope this will solve your issue.