Access to XMLHttpRequest at 'https://loggworks-c15c9e56f169.herokuapp.com/mangopay/cardregistration' from origin 'https://profesional-loggworks.netlify.app' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

[Deleted user]

Hello, I need help with this. I started getting this error when I shifted from sandbox to production. how do I fix this cors issue?
below is my code
`app.use(cors());
app.post('/mangopay/cardregistration', async (req, res) => {
try {
const authToken = await getAuthToken();

// Step 1: Create a card registration request
const cardRegistrationData = {
  UserId: req.body.userId, // Replace with the actual user's MangoPay ID
  Currency: 'GBP', // Replace with the desired currency
};

const cardRegistrationResponse = await axios.post(
  `https://api.mangopay.com/v2.01/${clientId}/cardregistrations`,
  cardRegistrationData,
  {
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${authToken}`,
    },
  }
);

// Step 2: Save the AccessKey and PreregistrationData
const accessKey = cardRegistrationResponse.data.AccessKey;
const preregistrationData = cardRegistrationResponse.data.PreregistrationData;
const cardRegistrationURL = cardRegistrationResponse.data.CardRegistrationURL;


// Step 3: Make a request to the CardRegistrationURL
const tokenizationResponse = await axios.post(cardRegistrationURL, {
  accessKeyRef: accessKey,
  data: preregistrationData,
  cardNumber: req.body.cardNumber,
  cardExpirationDate: req.body.expiryDatef,
  cardCvx: req.body.cvv,
}, {
  headers: {
    'Content-Type': 'application/x-www-form-urlencoded', // Set the correct Content-Type
  },
});
// Step 4: Update the card registration with the RegistrationData from the tokenization server
const registrationData = tokenizationResponse.data;
const updateResponse = await axios.put(
  `https://api.mangopay.com/v2.01/${clientId}/cardregistrations/${cardRegistrationResponse.data.Id}`,
  { RegistrationData: registrationData },
  {
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${authToken}`,
    },
  }
);

// Handle the MangoPay API response or perform any additional actions
const cardId = updateResponse.data.CardId;
res.json({ cardId });

} catch (error) {
}
});`

[fredericdelordm]

Hello @loggworks,

It's not related to the SDK