How to handle TokenMismatchException when session expires on the client side

Greetings, friends!

How do you usually handle TokenMismatchException on the client side? I dont want to handle the exception by redirecting them to a log in page as all the requests are handled via ajax including authentication.

So my solution so far is: catch the mismatch exception in Handler.php and return a json response with a new token. on the client side, use the new token to continue the intended process. However, I couldnt renew the token for some reason. This is what i have:

setup csrf_token in a global js file:

   $(function () {
       $.ajaxSetup({
         headers: { 'X-CSRF-TOKEN': $('meta[name="csrf_token"]').attr('content') }
       });
     });

render method in app/exceptions/handler.php:

    public function render($request, Exception $e)
    {
        if ($this->isHttpException($e))
        {
            return $this->renderHttpException($e);
        }
        else if ($e instanceof TokenMismatchException)
        {
            if ($request->ajax()) {
                return response()->json([
                    'message' => 'TokenMismatchException',
                    'token' => csrf_token()
                ]);
            }
        }
        else
        {
            return parent::render($request, $e);
        }
    }

in authentication.js:

  $.ajax({
    type: "POST",
    url: "/auth/login",
    data: {
      "email" : $('#login_email').val(),
      "password" : $('#login_password').val(),
      'remember': $('#login_remember').is(':checked')
    },
    success: function(response) {
      if (response.message === 'TokenMismatchException') {
        console.log(response);  //message and token exist
        //if catch the exception, use the new token to set up the ajax headers and login again
           $.ajaxSetup({
             headers: { 'X-CSRF-TOKEN': response.token }
             });
        login();
      }
      console.log('logged in');  
    },
    error: function(xhr, status, err) {
    }
  });

for some reason, $.ajaxSetup in the callback is not resetting the headers with the new token, so calling login again in the callback yields an infinite loop.

what should i do differently. how should i renew the token on the client side?

thanks in advance.