The code looks like this code

        <div class="clearfix"></div>
        <div class="nav-previous alignleft"><?php next_posts_link( 'Older posts' ); ?></div>
        <div class="nav-next alignright"><?php previous_posts_link( 'Newer posts' ); ?></div>
        <?php endif; ?>
    </section>
     ```code```

It is a pre built website theme for WordPress, the syntax is wrong as i can see. The website used to show the buttons, and suddenly they disappeared. I don't know how to code so if anyone could help me, I would be more than happy