I'm Trying to implement Card saving for later use

[Softmatech]

I implement the card register like it is on the example enter (card number, expiry date, and CVC) and on saving, it shows this message on the log and looks at how the result appears at this video,
https://user-images.githubusercontent.com/29921959/122156864-d8c14500-ce37-11eb-841c-c338d288e511.mov

`static Future handlePayPress(BuildContext context,CardFieldInputDetails _card, String _email) async {
if (_card == null) {
return null;
}
setSettings();
try {
// 1. Create setup intent on backend
final clientSecret = await _createSetupIntentOnBackend(context,_email);
print("SECRET==================== $clientSecret");
// 3. Confirm setup intent
final setupIntentResult = await Stripe.instance.confirmSetupIntent(clientSecret, PaymentMethodParams.card(setupFutureUsage: PaymentIntentsFutureUsage.OffSession));
log('Setup Intent created $setupIntentResult');
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(
'Success: Setup intent created. Intent status: $setupIntentResult',
),
),
);
return setupIntentResult;

} catch (error, s) {
log('Error while saving payment', error: error, stackTrace: s);
ScaffoldMessenger.of(context)
.showSnackBar(SnackBar(content: Text('Error code: $error')));
}
}`

[jonasbark]

What's the full stack trace of the exception? Can you provide a minimal reproducible example?

[Softmatech]

@jonasbark

Error while saving payment
PlatformException(Failed, There was an unexpected error -- try again in a few seconds, null, null)
#0 JSONMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:155:7)
#1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:158:18)

#2 MethodChannel.invokeMapMethod (package:flutter/src/services/platform_channel.dart:358:43)

#3 MethodChannelStripe.confirmSetupIntent (package:stripe_platform_interface/src/method_channel_stripe.dart:98:20)

#4 Stripe.confirmSetupIntent (package:flutter_stripe/src/stripe.dart:228:27)

#5 StripeHelper.handlePayPress (package:caritas/commons/stripe.dart:91:33)

#6 getCardForm.. (package:caritas/commons/helper.dart:438:54)