Vercel Deployment issue - There are lots of console issue

Hi Guys,

I was successfully deploy my very first website at vercel. However, I got this console issues. Could you please advise how to fix those issues? my website is I just migrated it from wp to frontity.

Access to fetch at '' from origin '' has been blocked by CORS policy: The 'Access-Control-Allow-Origin' header has a value 'http://localhost:3000' that is not equal to the supplied origin. Have the server send the header with a valid value, or, if an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.