Stripe Client intent error swift: No such payment_intent - ios

Question

I am having issues utilizing a pay function given by the stripe documentation
Stripe documentation: https://stripe.com/docs/payments/accept-a-payment
All my server side & client side keys are the same testing keys.
I have successfully retrieved a payment intent with the value
pi_1ITiM3KCSIKL5fqUAMGk32Do_secret_cJfvlRxtnnTuU8VIScj8NCz12
Error message:
No such payment_intent: \ 'pi_1ITiM3KCSIKL5fqUAMGk32Do \ '
Not sure why the error message includes: (possibly json issue)
\ '
Any help would be much appreciated on why this is happening.
var paymentIntentClientSecret: String?
func pay() {
guard let paymentIntentClientSecret = paymentIntentClientSecret else {
return;
}
print(paymentIntentClientSecret) // pi_1ITiM3KCSIKL5fqUAMGk32Do_secret_cJfvlRxtnnTuU8VIScj8NCz12
// Collect card details
let cardParams = creditCardField.cardParams//cardTextField.cardParams
let paymentMethodParams = STPPaymentMethodParams(card: cardParams, billingDetails: nil, metadata: nil)
let paymentIntentParams = STPPaymentIntentParams(clientSecret: paymentIntentClientSecret)
print(paymentIntentParams)
paymentIntentParams.paymentMethodParams = paymentMethodParams
// Submit the payment
let paymentHandler = STPPaymentHandler.shared()
paymentHandler.confirmPayment(paymentIntentParams, with: self) { (status, paymentIntent, error) in
switch (status) {
case .failed:
//self.displayAlert(title: "Payment failed", message: error?.localizedDescription ?? "")
print("failed: \(String(describing: error?.localizedDescription))")
break
case .canceled:
//self.displayAlert(title: "Payment canceled", message: error?.localizedDescription ?? "")
print("cancled: \(String(describing: error?.localizedDescription))")
break
case .succeeded:
//self.displayAlert(title: "Payment succeeded", message: paymentIntent?.description ?? "", restartDemo: true)
print("succeeded: \(String(describing: error?.localizedDescription))")
break
#unknown default:
fatalError()
break
}
}
}
Response body:
{
"error": {
"code": "resource_missing",
"doc_url": "https://stripe.com/docs/error-codes/resource-missing",
"message": "No such payment_intent: 'pi_1ITh8QKCSIKL5fqU7VjJqHH0'",
"param": "intent",
"type": "invalid_request_error"
}
}

Answer 1

“No such...” errors are usually caused by either a mismatch in API keys (e.g. using a mixture of your test plus live keys) or by trying to access objects that exist on a different account (e.g. trying to perform an operation from your platform account on an object that was created on a connected account).
Most likely you're using a publishable key from one account and a secret key from another (assuming you're not using Connect).