How to resolve “TypeError: NetworkError when attempting to fetch resource.”

Question

When I use aurelia-fetch-client to post json data to server and I got this error \"TypeError: NetworkError when attempting to fetch resource.\" I think your answer is very u

Answer 1

It was a CORS problem in my case, POST request was blocked because server didn't list all needed headers in the allowed headers request header. Setting 'Access-Control-Allow-Headers' to '*' on server did the trick.