파일 등록하면 이미지는 안나오고 파일명만 나와요..

import React from 'react';
import Dropzone from 'react-dropzone';
import axiosInstance from '../utils/axios';

const FileUpload = ({ onImageChange, images }) => {

  const handleDrop = async (files) =>{
    let formData = new FormData();

    const config = {
      header: {'content-type': 'multipart/form-data'}
    }

    formData.append('file', files[0]);

    try{
      const response = await axiosInstance.post('/products/image', formData, config);
      onImageChange([...images, response.data.fileName]);
      
    }catch(error){
      console.error(error);
    }
  }


  return (
    <div className='flex gap-4'>

      <Dropzone onDrop={handleDrop}>
        {({ getRootProps, getInputProps }) => (
          <section 
            className='min-w-[300px] h-[300px] border flex items-center justify-center'
          >
            <div {...getRootProps()}>
              <input {...getInputProps()} />
              <p className='text-3xl'> + </p>
            </div>
          </section>
        )}
      </Dropzone>

      <div className='flex-grow h-[300px] border flex items-center justify-center overflow-x-scroll overflow-y-hidden'>
        {images.map(image => (
          <div key={image}>
            <img 
              className='min-w-[300px] h-[300px]'
              src={`${import.meta.env.VITE_SERVER_URL}/${image}`}
              alt={image}
            />
          </div>
        ))}
      </div>

    </div>
  );
};

export default FileUpload;

파일도 uploads에 다 들어가는데 파일명만 계속 나와요