When we submit a POST request from localhost:3000 to an API, we got message below in the browser develop console with Status: 404.
x 'Access to fetch at '<Invoke URL>' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If any opaque response serves your needs, set the request mode to 'no-cors' to fetch the resource with CORS disabled'.
x POST <invoke URL' net::ERR_FAILED 404
But when we submit the request to the same API from Postman, we got 200 response.
Where could be the problem? Thanks.
Thanks Antonio. We enabled CORS at the resource level in the API. Is that not sufficient? What do you mean by 'implement CORS at server/backend layer'? The backend of the specific method is an ECS service with Node.js runtime.
I meant that for Instance, if you use express as backend server, you should look into enabling cors like this: https://expressjs.com/en/resources/middleware/cors.html. Try out and let me know ;)