401 Unauthorized /userinfo endpoint

Get Help
,
1

Hello,

I’m trying to retreive the user info via the userinfo endpoint but i have a 401 response
Currently i have the following setup
On the frontend part i’m using the auth0 spa js library.
The backend side is a node js server with express.

On the frontend i have the following code:

//initialization
const auth0 = await createAuth0Client({
    domain: import.meta.env.VITE_AUTH0_DOMAIN,
    clientId: import.meta.env.VITE_AUTH0_CLIENT_ID,
    authorizationParams: {
        redirect_uri: import.meta.env.VITE_AUTH0_CALLBACK_URL,
        scope: 'openid profile email',
    }
});

then on a button click i call this:
auth0.loginWithRedirect();

After the redirect when landing on my callback page i do that:

await auth0.handleRedirectCallback();
const token = await auth0.getTokenSilently();

Then i send the access token into the headers to my server API like that:

axios({
  url,
  method,
  data: data.params,
  headers: {
    Authorization: `Bearer ${token}`
  }
});

On the backend i have a middleware function that retrieve the token + send it to the userinfo endpoint:

const axios = require('axios');
const authenticateToken = async (req, res, next) => {
  const token = req.headers.authorization.split(' ')[1];

  let config = {
    method: 'get',
    maxBodyLength: Infinity,
    url: `https://${process.env.AUTH0_DOMAIN}/userinfo`,
    headers: { 
      'Accept': 'application/json', 
      'access_token': token
    }
  };
  
  axios.request(config)
  .then((response) => {
    console.log("RESPONSE AUTH TOKEN", JSON.stringify(response.data));
  })
  .catch((error) => {
    console.log("ERROR AUTH TOKEN", error);
  });
}