shortcode to list team members

add_shortcode( 'myteam', 'mysite_team_sc' );
function mysite_team_sc( $atts )  {

   $atts = shortcode_atts(
      array(
         'display' => -1,
         'title' => false,
         'category' => false,
      ), $atts, 'myteam'
   );

   $args = array(
      'post_type' => 'mysite_team',
      'posts_per_page' => $atts['display'],
      'orderby' => 'menu_order',
      'order' => 'ASC'
   );

   if ( $atts['title'] ) {
      $args['pagename'] = sanitize_title( $atts['title'] );
      $args['display'] = 1; // Only display the single page
      $args['category'] = false; // Ignore the category
   }
   if ( $atts['category'] ) {
      $args['category_name'] = sanitize_title( $atts['category'] );
   }
   $op = ''; // Shortcodes must return their output
   $team_query = new WP_Query( $args );
   if ( $team_query->have_posts() ) :
      ob_start();
      while ( $team_query->have_posts() ) : $team_query->the_post(); ?>

         <div class="team-list float-left" id="team-member-list-<?php echo $i; ?>">
            <div class="team-thumb-list float-left">
               <?php the_post_thumbnail();?>
            </div>
            <div class="team-list-text float-left">
               <h3 class="my-team-member-name" id="my-team-member-<?php echo $i; ?>"><?php echo the_title(); ?></h3>
            </div>
         </div><!--team-list-->
      <?php endwhile;
      $op = ob_get_clean();
   else :
      $op = "Sorry, no team member(s) found.";
   endif;
   wp_reset_query();

   return $op;

}