I’ve used the web payments quickstart code, and once set up with the appid and accesstoken it was working, tried again now and any payments via the sandbox are throwing a 404 when it hits this code
const paymentResponse = await fetch('/payment', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body,
});
The app id is sandbox-sq0idb-7449b-2lgMG7TWXVdCEB0A