Response: "400 (Bad Request)"
"Access to XMLHttpRequest at '
MerchantCode' from origin 'http://localhost:8080' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource"
@Crisso, that `/oauth/token` endpoint does not have
CORS support, since the token it returns contains sensitive information.
To successfully request an API token, send the `/oauth/token` request from your backend server (instead of your frontend client) to the Clover server. When the Clover server responds to the request, retrieve the token from your backend server.