Uncaught (in promise) TypeError: Cannot read property 'json' of undefined

[DDholiyan]

Bug report

script.js:117 Uncaught (in promise) TypeError: Cannot read property 'json' of undefined

Describe the bug

Below line gives above error

return result.json();

[cjavilla-stripe]

Hey @DDholiyan This is almost always because of the .env file not being correctly configured. Can you share the output of the server log when you get this error?

[DDholiyan]

This is on most of the response. See below declined response.
{
"error": {
"code": "card_declined",
"decline_code": "live_mode_test_card",
"doc_url": "https://stripe.com/docs/error-codes/card-declined",
"message": "Your card was declined. Your request was in live mode, but used a known test card.",
"type": "card_error"
}
}

Console:- Uncaught (in promise) TypeError: Cannot read property 'json' of undefined
at script.js line no 118

stripe
.createPaymentMethod("card", card)
.then(function(result) {
if (result.error) {
showError(result.error.message);
} else {
orderData.paymentMethodId = result.paymentMethod.id;

        return fetch("pay.php", {
            method: "POST",
            headers: {
                "Content-Type": "application/json"
            },
            body: JSON.stringify(orderData)
        });
    }
})
.then(function(result) {
    return result.json(); // Line no 118
})

[cjavilla-stripe]

That means the sample was configured with live mode API keys to take real payments, but a test card was used. Test cards only work with test mode API keys. Try using your test mode API keys.

[DDholiyan]

I know what is this mean. I just want to tell you that this error comes every time we got response from stripe.