I can't upload 2 files using multer

I can't upload 2 files using multer

I Have 2 files( 1 video and 1 image ) and i want to upload it to my server using multer This is my react code :

I Have 2 files( 1 video and 1 image ) and i want to upload it to my server using multer This is my react code :

const data = new FormData();
data.append('banner', this.state.banner);
data.append('preview', this.state.preview);

axios.post('/lesson', data).then(() => {}) <div> <input type="file" id='file1' onChange={this.handleUploadFile1} />

<input type="file" id='file2' onChange={this.handleUploadFile2} /> </div>


And here is my server code :

router.post('/lesson', upload.single('banner'), upload.single('preview'),controller.addLesson)

Then i got this error :

MulterError: Unexpected field

Please help me how i can solve this problem


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