I don't know why I receive on server [Error: Multipart: Boundary not found]
and bundle.js:37628 POST http://localhost:8800/exporttocsv 500 (Internal Server Error)
When I make post through

<form action=/exporttocsv method=POST  encType=multipart/form-data>

post works correctly, but through axios doesn't work.

Please help me fix the mistake

this my code
/--client

import axios from 'axios'

var formData = new FormData()



const config = { headers: { 'Content-Type': 'multipart/form-data' } };

export const ipmortToCSV = (file) => dispatch => {



formData.append('file',file)

console.log(formData.getAll('data'))



axios.post('/exporttocsv', {

          UploadCommand: formData

      },config)

      .then(function (response) {

        console.log(response);

      })

      .catch(function (error) {

        console.log(error);

      });

//--server

const router = require('express').Router()

var csv = require('csv-express')

const controllers = require('../../controllers/exporttocsv')

var multer  = require('multer')

var upload = multer({dest : 'exporttocsv/'})



router.get('/', (req, res) => {

      controllers.exportToCsv(req,res)

  })

router.post('/',upload.single('file'),(req,res) => { 

    //controllers.importToCsv(req,res)

})



module.exports = router