Woocommerce – Add to Cart operate

I’ve made a customized theme the place individuals can reserve an occasion. 95% of the individuals bought no issues. the 5% bought issues once they add it to thier cart.

After they click on on reserve, an ajax name is made the place a brand new product is created and added to thier cart. After that is carried out, the ajax name will get a response of success: true. the 5% will get the popup, however the cart is empty.

What have I attempted:

• Init the woocommerce session when the person is just not registered
• Debug on a number of locations inside the code, no success.
• Cookies are enabled on the prospects

On the debug, the product is created and added to the cart, I am getting a hash response from the add_to_cart operate.

That is my add to cart operate:

public operate add_to_cart_virtuagym() {
        error_log("Making an attempt so as to add product with ID: " . $_POST['id'] . ' dienst: ' . $_POST['dienst']);

        if(isset($_POST['id']) && isset($_POST['dienst'])) :

            $occasions = get_transient('virtuagym');
            $title = "Reservering";
            $title_to_check = "";
            $max = 1;
            $total_max_places = 1;
            $attendees = 0;
            $begin = "";
            $finish = "";

            foreach($occasions as $occasion) {
                if($event->event_id == $_POST['id']) {
                    $total_max_places = $event->max_places;
                    $attendees = $event->attendees;
                    $max = $event->max_places - $event->attendees;
                    $begin = $event->begin;
                    $finish = $event->finish;
                    $title = $event->title . ' ' . date("d-m-Y H:i", strtotime($begin));
                    $title_to_check = $event->title;
                }
            }

            if(!$this->is_event_reservated($_POST['id'], $total_max_places, $attendees) && $begin != "") {
                $product = new WC_Product_Simple();

                $product->set_name( $title );
                $product->set_slug( 'reservering' );
                $product->set_catalog_visibility("hidden");

                $value = 0;

                if(get_field( 'virtuagym_price', $_POST['dienst'] )) {
                    $value = get_field( 'virtuagym_price', $_POST['dienst'] );
                }

                if ( have_rows( 'virtuagym_evenementen', $_POST['dienst'] ) ) :
                  whereas ( have_rows( 'virtuagym_evenementen', $_POST['dienst'] ) ) : the_row();
                    if($title_to_check == get_sub_field( 'titel' )) {
                        $value = get_sub_field( 'prijs' );
                    }
                  endwhile;
                endif;

                error_log("Merchandise value: " . $value);

                if($value == 0) {
                    wp_send_json_error(["message" => "Er is iets mis gegaan met het ophalen van de prijs. Probeer het nog een keer."]);
                }

                $product->set_regular_price( floatval($value) );
                $product->set_manage_stock(true);
                $product->set_stock_quantity(1);
                $product->save();

                update_post_meta($product->get_id(), 'virtuagym_id', $_POST['id']);
                update_post_meta($product->get_id(), 'expiration', date("Y-m-d H:i", strtotime("+10 minutes")));
                update_post_meta($product->get_id(), 'begin', $begin);
                update_post_meta($product->get_id(), 'finish', $finish);
                update_post_meta($product->get_id(), 'max_places', $max);

                error_log("Creating product: " . $begin . ' Title: ' . $title . ' And ID: ' . $_POST['id']);

                $consequence = WC()->cart->add_to_cart( $product->get_id(), 1 );

                error_log("Cart consequence: " . $consequence);
                error_log("Cart rely: " . WC()->cart->get_cart_contents_count());
                
                if(get_transient($_POST['id'])) {
                    $mixed = array_merge(get_transient($_POST['id']), [$product->get_id()]);
                    set_transient($_POST['id'], $mixed, 600);
                } else {
                    set_transient($_POST['id'], [$product->get_id()], 600);
                }
                
                wp_send_json_success();
            } else {
                wp_send_json_error(["message" => "Alle plekken zijn helaas al gereserveerd."]);
            }
        endif;

        wp_send_json_error(["message" => "No ID provided."]);

        die;
    }

My JS code:

$(doc).on('click on', '.reserve_event', operate(e) {
        var button = $(this);
        var allbuttons = $('.reserve_event');

        if($('.reserve_event').attr('data-clicked') === 'false') {
            $('.reserve_event').attr('data-clicked', 'true');

            var information = {
                'motion': 'add_to_cart_virtuagym',
                'id': $(this).information('id'),
                'dienst': params.page_id
            };

            button.html('Laden...');

            $.ajax({ // you may as well use $.put up right here
                url : params.ajax_url, // AJAX handler
                information : information,
                kind : 'POST',
                success : operate( information ) {
                    console.log(information);
                    
                    if(information.success) {
                        renew_cart();
                    }

                    if(!information.success) {
                        button.dad or mum().discover('.occupied').html(information.information.message);
                        button.html('reserveren');
                    }

                    allbuttons.attr('data-clicked', 'false');
                }
            });
        }
    });

Hope somebody acknowledge this downside and bought an answer!