I got issue CORS when hit api on local

[ningo-agilityio]

Url: https://api.prowritingaid.com/api/async/html This is my headers:

api.apiClient.defaultHeaders = { 
  licenseCode: 'xxx',
  "Access-Control-Allow-Origin": "http://localhost:3000/",
  "Access-Control-Allow-Methods": "POST, GET, OPTIONS",
  "Access-Control-Allow-Headers": "Access-Control-Allow-*, Content-Type"
}

My error:

Access to XMLHttpRequest at 'https://api.prowritingaid.com/api/async/html' from origin 'http://localhost:3000' 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.

[SomeRom71]

Same issue. Got cors error even on site, not local.

[demiro]

is this project still live? looks like the code was not touched in 5 years! I am getting cors issues on localhost as well