CORS blocking API

I'm suddenly getting this error on my API call:

Access to fetch at 'https://api.d-id.com/talks/streams' from origin 'https://www.mything' has been blocked by CORS policy: 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.