Infinite scroll on the blog page

I’m trying to build an endless load for articles on my blog page.

I’m following this guide to make it happen: https://code.tutsplus.com/tutorials/how-to-create-infinite-scroll-pagination–wp-24873

I managed to resolve all the errors I received but now when I get to the end of the page the ajax-loader appears correctly but once it disappears it doesn’t load the subsequent posts anyway.

The pagination works correctly and I see that if I write the URL https://example.com/blog/page/2 I am actually redirected to the next 6 articles.

So I just can’t figure out what the problem is in my code…

Below the various codes used.

page-blog.php

<div id="contenuto">

wp_enqueue_script( 'scripts-blog', get_template_directory_uri() . '/js/scripts-blog.js', array ( 'jquery' ), 1.1, true);

<!-- Define our WP Query Parameters -->
<?php
$paged = ( get_query_var('paged') ) ? get_query_var('paged') : 1;
$args=array(
    'posts_per_page' => 6,
    'paged' => $paged,
    'caller_get_posts'=> 1
);
$query_post = new WP_Query( $args ); 
?>

<?php while ($query_post -> have_posts()) : $query_post -> the_post(); ?>

    <article>Article here....</article>

<?php endwhile; ?>

</div>

/js/scripts-blog.js

jQuery(document).ready(function($) {
    var count = 2;
    $(window).scroll(function(){
        if  ($(window).scrollTop() == $(document).height() - $(window).height()){
            loadArticle(count);
            count++;
        }
    });

    function loadArticle(pageNumber){
        $('a#inifiniteLoader').show('fast');
        $.ajax({
            url: "https://example.com/wp-admin/admin-ajax.php",
            type:'POST',
            data: "action=infinite_scroll&page_no="+ pageNumber + '&loop_file=loop',
            success: function(html){
                $('a#inifiniteLoader').hide('1000');
                $("#contenuto").append(html);
            }
        });
        return false;
    }
});

functions.php

function wp_infinitepaginate(){ 
    $loopFile        = $_POST['loop_file'];
    $paged           = $_POST['page_no'];
    $posts_per_page  = get_option('posts_per_page');

    # Load the posts
    query_posts(array('paged' => $paged )); 
    get_template_part( $loopFile );

    exit;
}
add_action('wp_ajax_infinite_scroll', 'wp_infinitepaginate');           // for logged in user
add_action('wp_ajax_nopriv_infinite_scroll', 'wp_infinitepaginate');    // if user not logged in

Thanks a lot to those who will help me

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