Access-Control-Allow-Origin not present: CORS policy

Access to fetch at 'http://127.0.0.1:3001/api/v1/posts' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

const posts = () => {

fetch('http://127.0.0.1:3001/api/v1/posts')

.then((r) => r.json()

.then((data) => ({ status: r.status, body: data })))

.then((obj) => console.log(obj));

};

Use 'api/v1/posts' instead 'http://127.0.0.1:3001/api/v1/posts'

If you want to enable CORS for all the request  => npm i cors --save-dev

const cors = require('cors');

app.use(cors())

https://stackabuse.com/handling-cors-with-node-js/

fetch(url, {

method: 'GET',

mode: 'no-cors', // set this mode

dataType: 'json',

headers: {

'Content-Type': 'application/json',

Accept: 'application/json',

},

})

fetch_url = https://site.tech/api/tech

ping site.tech // get IP Adress and put it instred url

fetch_url = https://0.0.0.0/api/tech