Access to fetch at 'https://api.cedarmaps.com/v1/fonts...' from origin '...' has been blocked by CORS policy: The 'Access-Control-Allow-Origin' header has a value 'http://localhost' that is not equal to the supplied origin.

[dev-Milad]

our code was working on production mode, but now when we want to use our map it get failed by this error message:

Access to fetch at 'https://api.cedarmaps.com/v1/fonts...' from origin '...' has been blocked by CORS policy: The 'Access-Control-Allow-Origin' header has a value 'http://localhost' 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.

we didn't change anything on front-end so i have no idea what's going on here.

[nimolix]

Origin header value should be the same as your actual domain which loads the map. Please see your network tab in developer tools and check which request (OPTIONS or GET) fails with the mentioned error. Also for further investigation, you can contact support@cedarmaps.com and include your client-id and a screenshot of the error.