Failed to load https://enigmatic-shore-55329.herokuapp.com/posts: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://localhost:3000’ is therefore not allowed access. The response had HTTP status code 503. If an opaque response serves your needs, set the request’s mode to ‘no-cors’ to fetch the resource with CORS disabled.

Question

robsonpf opened this issue 6 years ago · comments

Robson Farias · Answer 1 · Thu May 17 2018 07:21:36 GMT+0800 (China Standard Time)

I'm trying to deploy my backend with heroku but getting complain about CORS disabled.

ericphamhoang · Answer 2 · Thu May 17 2018 11:38:40 GMT+0800 (China Standard Time)

Maybe try testing on axios (https://github.com/axios/axios). If axios works, its because of your server setup.