CORS policy error on 'sdk.register();'

Follow

I'm getting CORS error when trying to register the current browser with Airship using bellow code:

UA.then((sdk) => {
  sdk.register(); // Returns Channel object
});

It says that:

"snippet.html:1 Access to fetch at 'https://aswpapius.com/api/web-channels' from origin 'http://localhost:5502' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled."

"POST https://aswpapius.com/api/web-channels net::ERR_FAILED"

Error screen shoot: