Object of class Module could not be converted to string

Hi all,
So my blog works fine when viewing from the normal url https://website.com/blog/

However, I’m now trying to add 3 of the latest posts to my homepage, I’m using the following code:

<?php
					// Include WordPress Posts
					require('/blog/wp-blog-header.php');
					query_posts('showposts=3');

					while (have_posts()): the_post(); ?>
						<li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>
				<?php endwhile; ?>

The require is working fine, but I’m getting this error message:

Catchable fatal error: Object of class Module could not be converted to string in /website/blog/wp-includes/classes.php on line 273

Does anyone have any insight?