I'm trying fetch user object from an API, I get response code 200 but data is null. I tried copy the request url to browser - I get json object, same in Postman.

fetch(url,config)
    .then(response => response.json())
    .then((data) => {
    console.log('Success:', data);
    })
    .catch((error) => {
    console.error('Error:', error);
    });