not working custom category infinite scroll

gistfile1.txt

<?php
function be_load_it_js() {

  $query = array( 
    'post__not_in' => array( get_queried_object_id() ), 
    'category_name' => ea_first_term( 'category', 'slug' ), 
    'posts_per_page' => 3 
  );		
  $args = array(
    'url'   => admin_url( 'admin-ajax.php' ),
    'query' => $query,
  );

	wp_enqueue_script( 'be-load-it', get_stylesheet_directory_uri() . '/js/load-moretwo.js', array( 'jquery' ), '1.0', true );
	wp_localize_script( 'be-load-it', 'beloadit', $args );
	
}
add_action( 'wp_enqueue_scripts', 'be_load_it_js' );

function be_ajax_load_it() {

$args = isset( $_POST['query'] ) ? array_map( 'esc_attr', $_POST['query'] ) : array();
	$args['post_type'] = isset( $args['post_type'] ) ? esc_attr( $args['post_type'] ) : 'post';
	$args['paged'] = esc_attr( $_POST['page'] );
	$args['post_status'] = 'publish';

	ob_start();
	$loop = new WP_Query( $args );
	if( $loop->have_posts() ): while( $loop->have_posts() ): $loop->the_post();
		 echo '<h4><a href="' . get_permalink() . '">' . get_the_title() . '</a></h4>';
	endwhile; endif; wp_reset_postdata();
	$data = ob_get_clean();
	wp_send_json_success( $data );
	wp_die();
}
add_action( 'wp_ajax_be_ajax_load_it', 'be_ajax_load_it' );
add_action( 'wp_ajax_nopriv_be_ajax_load_it', 'be_ajax_load_it' );


function ea_first_term( $taxonomy, $field ) {
	$terms = get_the_terms( get_the_ID(), $taxonomy );
  
	if( empty( $terms ) || is_wp_error( $terms ) )
		return false;
	// If there's only one term, use that
	if( 1 == count( $terms ) ) {
		$term = array_shift( $terms );
	} else {
		$term = array_shift( $list );
	}
	// Output 	
	if( $field && isset( $term->$field ) )
		return $term->$field;	
	else
		return $term;		
}




JS:
jQuery(function($){

  $('.faqs').append( '<span class="load-it" style="background:red; height:5px; display:block"></span>' );
  var button = $('.faqs .load-it');
  var page = 2;
  var loading = false;
  var scrollHandling = {
      allow: true,
      reallow: function() {
          scrollHandling.allow = true;
      },
      delay: 200 //(milliseconds) adjust to the highest acceptable value
  };

  $(window).scroll(function(){
    if( ! loading && scrollHandling.allow ) {
      scrollHandling.allow = false;
      setTimeout(scrollHandling.reallow, scrollHandling.delay);
     if ($(button).offset()) {
      var offset = $(button).offset().top - $(window).scrollTop();
    }
      if( 2000 > offset ) {
        loading = true;
        var data = {
          action: 'be_ajax_load_it',
          page: page,
          query: beloadit.query,
          nonce: beloadit.nonce,
        };
        $.post(beloadit.url, data, function(res) {
          if( res.success) {
            console.log (res)
          $('.faqs').append( res.data );
          $('.faqs').append( button );
            page = page + 1;
            loading = false;
          } else {
            console.log('res' + res);
          }
        }).fail(function(xhr, textStatus, e) {
          console.log('xhr' + xhr.responseText);
        });

      }
    }
  });
});

HTML--------------
		<div class="faqs">
			<ul class="faqs__list">
				<?php while (have_posts()) : the_post(); ?>
					<li class="faqs__list__item">
						<a href="<?php the_permalink(); ?>" class="black-text medium-text"><?php the_title(); ?></a>
					</li>
				<?php endwhile; ?>
			</ul>
			<div class="nav-links">
					<span class="nav-previous alignleft"><?php next_posts_link( 'Older posts' ); ?></span>
					<span class="nav-next alignright"><?php previous_posts_link( 'Newer posts' ); ?></span>
				</div>
		</div>