[Vuejs]-How to POST formData and another data in axios

You should use it like this

const formData = new FormData();
  formData.append('file', files);

  axios.post('/api/upload', {
    data:formData,
    /* what is this ? If you want this to be on form data use formData.append('route', this.$route.params.test) */
      headers: {
        'content-type': 'multipart/form-data',
      }}).then(response => {
    console.log(response);
  });