I´m using REACT-JS framework for FRONT-END:

This is my calling action from REDUX-REACT

export function UserLogin(values) {

    var headers = {

        'Access-Control-Allow-Origin': '*',        

        'Accept': 'application/json',

        'Content-Type': 'application/json'

    }



    const request = axios.post('http://localhost:8000/login', headers,  values).then(function(response){

        /*() => {callback();}*/

        console.log(response);

    })

    .catch((error) => {

        // Error

        if (error.response) {

            console.log(error.response.data);



        } 

        else if (error.request) {

            // The request was made but no response was received

            // `error.request` is an instance of XMLHttpRequest in the browser and an instance of

            // http.ClientRequest in node.js

            console.log(error.request);

        } 

        else {

            // Something happened in setting up the request that triggered an Error

            console.log('Error', error.message);

        }

    });

    return {

        type: LOGIN_REQUEST_SUCCESS,

        payload: request

    };

}

I´m getting answer from other localhost:8000 for testing purposes.

I´m getting this errors:

Failed to load http://localhost:8000/login: Response to preflight
request doesn't pass access control check: No
'Access-Control-Allow-Origin' header is present on the requested
resource. Origin 'http://localhost:3000' is therefore not allowed
access.

And the console log from error.request