      }
                fetch('/api/messages/' + props.chapter.topic, {
                    method: 'POST',
                    headers: {
                        'Accept': 'application/json',
                    }
                });
            }, 1500);
            return () => clearInterval(interval);
        }, [sending]);

        const columns = 2;
        const rows = props.chapter.services.map((service, i) => {
            return <Service key={i} service={service} />
        }).reduce((r, element, 