I'm having troubles trying to upload large files with Next.js. I've created an onChange function on my input file, here's the code:

const handleFileUpload = () => new Promise(async (resolve) => {
    if(ref.current?.files){
        const formData = new FormData()
        Object.entries(ref.current.files).map(([i, f]) => {
            return formData.append(`${id}_${i}`, f)
        })

        const config = {
            headers: { 'content-type': 'multipart/form-data' },
            onUploadProgress: (event) => {
                const p = Math.round((event.loaded * 100) / event.total);
                setProgress(p)
            }
        }

        try{
            const response = await axios.post('/api/upload-file', formData, config);
            resolve(response)
        }
        catch(err){
            console.log(err)
        }
   }
}

And this is my /api/upload-file.js

import nextConnect from 'next-connect';
import multer from 'multer';
import { METHOD_NOT_ALLOWED, NOT_IMPLEMENTED, OK } from '../../utils/statusCode';

const upload = multer({

    storage: multer.diskStorage({
        destination: './public/upload',
        filename: (req, file, cb) => cb(null, file.originalname),
    })

})

const apiRoute = nextConnect({

    onError(error, req, res){
        res.status(NOT_IMPLEMENTED).json({error: `Errore: impossibile procedere. ${error.message}`})
    },
    onNoMatch(req, res){
        res.status(METHOD_NOT_ALLOWED).json({error: `Metodo ${req.method} non permesso`})
    }

})

apiRoute.use(upload.any())
apiRoute.post((req, res) => res.status(OK).json({data: 'success'}))

export default apiRoute

export const config = {
    api: {
        bodyParser: false
    }
}

It works perfectly with small files, but I receive a 413 error with larger ones (even 1 or 2MB), is there something I'm missing here?

I'm using Next.js 12.0.3