Blocked by CORS policy - Access to fetch at ''


CORS Policy Error while retrieving the data from Gaia. I have observed today and got the error screenshot for reference. May I know the scenario when we will get this error?

Error :
Access to fetch at ‘’ from origin ‘’ 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.