Linkedin fetching user info not working in react js and nodejs

This is the frontend code to send get request for the access token, where code is the parameter which we get after signing in from LinkedIn, I have checked that this code variable is getting sent properly so it has no issues.

const getAccessToken = async (code) => {
        const response = await fetch(`http://localhost:8000/api/getaccesstoken/${code}`)
        console.log(response)
    }

This is the backend code

router.get('/getaccesstoken/:code', async (req, res)=>{
axios({
    method: "post",
    mode: 'no-cors',
    headers: { "Content-type": "x-www-form-urlencoded"},
    url: `https://www.linkedin.com/oauth/v2/accessToken?grant_type=authorization_code&code=${req.params.code}&client_id=${process.env.client_id}&client_secret={process.env.client_secret}&redirect_uri=http%3A%2F%2Flocalhost%3A3000%2Fdashboard`
})
    .then(function (response) { 
        console.log(response)
        res.send(response) 
    })
    .catch(function(error){
        console.log(error)
        res.send(error)
    })    
})

The error I am getting is the console of backend is very big but the last part says this:

{
  "error": "invalid_request",
  "error_description": "Unable to retrieve access token: appid/redirect uri/code verifier does not match authorization code. Or authorization code expired. Or external member binding exists"

} but I am sending the request as soon as it is redirected so the code can't be expired so soon. And when I directly try doing this by passing code using thunderclient request it works fine. Please let me know solutions to this if possible