Ajax + FLBuilder::render_query

Developers
1

Hi !

I created an ajax slider on a home page. On click to “next” button, an ajax function retrieve the content of a custom post type, and display it with FLBuilder::render_query.
But FLBuilder::render_query return nothing.

I test with the shortcode too, but nothing appears.
I got the right post_id from the js.

The JS :

$.ajax({ // you can also use $.post here
	url : mahii_carousel_params.ajaxurl, // AJAX handler
	data : data,
	type : 'POST',
	success : function( data ){
		if( data ) { 
			setTimeout(function(){ 
				container.empty().append(data);
				container.animate({
					opacity: 1,
				    left: 0,
				}, 400);
				if( $('.fl-ajax-carousel').find('.fl-heuritech-tab-title-active').length > 0 ) {
					$('.fl-ajax-carousel').find('.fl-heuritech-tab-title-active').trigger('mouseenter');
				}
			}, 300);
		}
		else {
			console.log('no data');
		}
	}
});

// Carousel
function mahii_carousel_ajax_handler(){
    $current_number = $_POST['current'];
    $minPos = $_POST['min'];
    if($minPos < 0) {
    	$minPos = $_POST['min'] * -1;
    }
    $current_numberPos = $current_number + $minPos;
    $maxPos = $_POST['max']+$minPos;
    $percent = $current_numberPos * 100 / $maxPos;
    $args = array(
        'post_type' => 'slider-heuritech',
        'tax_query' => array(
            array(
                'taxonomy' => 'slider-category',
                'field'    => 'slug',
                'terms'    => $_POST['category'],
            ),
        ),
        'meta_key'   => 'place',
        'meta_value' => $current_number,
        'posts_per_page' => 1,
    );
	$carousel = new WP_Query( $args );
	if( $carousel->have_posts() ) : while( $carousel->have_posts() ) : $carousel->the_post();
		$post_ID = get_the_ID();
		$current = get_field('place');
		if(get_field('dark_ui')) {
			$dark = " dark-ui";
		}
	endwhile;
	endif;
	wp_reset_query();
	echo '<svg class="fl-ajax-carousel-prev'.$dark.'" id="prev-slide" data-current="'.$current.'" data-max="'.$_POST['max'].'" data-min="'.$_POST['min'].'" viewbox="0 0 33 33" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M16.717.357L.919 16.154 16.717 31.95" stroke="#fff" stroke-linejoin="round"/></svg>';
	FLBuilder::render_query( array(
		'post_type' => 'slider-heuritech',
	    'p' => $post_ID,
	));
	echo do_shortcode('[fl_builder_insert_layout id="'.$post_ID.'"]');
    die; 
}
add_action('wp_ajax_carousel', 'mahii_carousel_ajax_handler'); // wp_ajax_{action}
add_action('wp_ajax_nopriv_carousel', 'mahii_carousel_ajax_handler'); // wp_ajax_nopriv_{action}

No error on the page nor in the XHR.
Someone can help me with this ?