React + Laravel でSPA！画像をリサイズして登録する機能を作る

import React, { Component } from 'react'
import axios from 'axios'
class UserProfile extends Component {
    constructor() {
        super()
        this.state = {
            img: '',
            name:''
        }
        this.onChange = this.onChange.bind(this);
        this.uploadFile = this.uploadFile.bind(this);
        this.onSubmit = this.onSubmit.bind(this);
    }
    onChange(e) { //name用
        this.setState({ [e.target.name]: e.target.value }) 
    }
    uploadFile(e) { //img用
        console.log(e.target.files[0]); //File {name: "me.png", lastModified: 1578446578390, lastModifiedDate: Wed Jan 08 2020 13:16:19 GMT+0100 (中央ヨーロッパ標準時), webkitRelativePath: "", size: 319611, …}
        this.setState({ img: e.target.files[0] })
        console.log(this.state.img); //null
    };
    onSubmit(e) {
        e.preventDefault()
        const data = new FormData();
        data.append('img', this.state.img ? this.state.img : ''); // nullのときに文字列の'null'が入るのを防ぐ
        data.append('name', this.state.name ? this.state.name : '');
        console.log(data); // FormData{}
        console.log(data.get('img')); //File {name: "me.png", lastModified: 1578446578390, lastModifiedDate: Wed Jan 08 2020 13:16:19 GMT+0100 (中央ヨーロッパ標準時), webkitRelativePath: "", size: 319611, …}
        return axios.post('api/editprofile', data).then(res => {
        }).catch(err => {
            console.log('失敗！')
        })
    }
    render() {
        return (
                <form noValidate onSubmit={this.onSubmit} encType="multipart/form-data">
                    <input multiple
                           type="file"
                           name="img"
                           onChange={this.uploadFile} />
                    <input type="text"
                           name="name"
                           value={this.state.title || ''}
                            onChange={this.onChange} />
                    <button type="submit">Save</button>
                </form>
        )
    }
}
export default UserProfile

Log::debug($request);
//array (
//  'img' => 
//  Illuminate\Http\UploadedFile::__set_state(array(
//     'test' => false,
//     'originalName' => 'me.png',
//     'mimeType' => 'image/png',
//     'error' => 0,
//     'hashName' => NULL,
//  )),
//  'name' => 'Me'
//) 
Log::debug($request->file('img'))
///private/var/folders/wn/ad9jFunmkgloibmfot3fOlkUip020gn/T/phpd4Pc5Ls 

<?php
namespace App\Http\Controllers;
use App\User; // Userモデル
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Validator;
use Intervention\Image\Facades\Image; //このあと説明するintervention/image
class UserController extends Controller
{
    public function editprofile(Request $request)
    {
        $user = // ユーザー情報はJWTを使用して取得しているため今回は省略
        $validator = Validator::make($request->all(), [
            'img' => 'nullable|file|image|mimes:jpeg,png,jpg,gif|max:2048',
            'name' => 'required|string|max:255|',
        ]);
        if ($validator->fails()) { //エラーがある場合
            return response()->json($validator->errors(), 400);
        }
        if ($img = $request->file('img')) {
            $image = Image::make(file_get_contents($img->getRealPath()));
            // 画像のリサイズ
            $image->resize(600, null, function ($constraint) {
                $constraint->aspectRatio();
            });
            $path = public_path('storage/images/' . $img->hashName());
            $image->save($path);
            $user->img = basename($path);
        }
        $user->name = $request->name;
        $user->save();
        return response()->json(compact('user'));
    }
}

    'providers' => [
        // 追記
        Intervention\Image\ImageServiceProvider::class,
    ],
    'aliases' => [
　　　　　// 追記
        'Image' => Intervention\Image\Facades\Image::class,
    ],

// widthを300に、heightを比率キープで自動リサイズ
$img->resize(300, null, function ($constraint) {
    $constraint->aspectRatio();
});
// heightを200に、widthを比率キープで自動リサイズ
$img->resize(null, 200, function ($constraint) {
    $constraint->aspectRatio();
});