Not working since Malware attack.

We were using this bit of code in our template, which worked perfectly until somehow, the files in the plugin were mostly deleted. I attempted to download and re-upload but this code no longer works. Can you explain maybe why?

<h3><a href="/events/" style="color:#3A250E; text-decoration: none;">WHAT’S HAPPENING</a></h3>
        <section class="box">
         <?php $args = array('post_type' => 'tribe_events','post_status'=>'publish','showposts'=>4,'orderby' => 'event-date','order'=>'ASC','eventDisplay'=>'upcoming');?>
        <?php query_posts($args); ?>
  <?php while ( have_posts() ) : the_post(); ?>
              
          <h4><a href="<?php echo the_permalink();?>"><?php the_title(); ?></a></h4>
           <?php       $eventsatrtdate = tribe_get_start_date($post->ID);
                $eventenddate = tribe_get_end_date($post->ID); ?>
          <span><?php echo $eventsatrtdate; ?></span>
          <p><?php $text = get_the_content($post->ID); echo substr($text,0,299);?><a href="<?php echo the_permalink();?>"> Read more...</a></p>
        
              <?php endwhile; ?>
      </section>

Thank you!