Multer give undefined for req.file

I’m make api to upload files using node js.

i using multer for handle multipart/form-data
but when i console.log(req.file) it appears undefined

Route

const uploadController = require('../controller/upload.server.controller');
const multer = require('multer');

const upload = multer({ dest: 'uploads/' });

/**
 * Routes
 */
module.exports = function (app) {
  app
    .route('/api/upload')
    .post(upload.single('image'), uploadController.upload);
};

Controller

exports.upload = async function (req, res) {
    console.log(req.file);
};

my request with postman

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