Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://myserver.com/marketplace/foo?test=123. (Reason: CORS request did not succeed). Status code: (null). There was a problem with the fetch operation: TypeError: NetworkError when attempting to fetch resource. from origin: https://1061842.apps.zdusercontent.com/ We have an app in production and set: Access-Control-Allow-Origin: https://1061842.apps.zdusercontent.com c.Writer.Header().Set(“Access-Control-Allow-Origin”, fmt.Sprintf(“https://%s.apps.zdusercontent.com”, id)) c.Writer.Header().Set(“Access-Control-Allow-Headers”, […]