【Laravel】Model ファイルのディレクトリ構成変更時にやること ref: https://daiki-sekiguchi.com/2018/09/17/laravel-how-to-change-model-dir/

change-call-user-model.sh

# RegisterController.php
$ vim app/Http/Controllers/Auth/RegisterController.php
$ cat app/Http/Controllers/Auth/RegisterController.php
<?php

namespace App\Http\Controllers\Auth;

# 「Models\」を追加
use App\Models\User;
use App\Http\Controllers\Controller;
...

# config/auth.php
$ vim config/auth.php
$ cat config/auth.php
...
    'providers' => [
        'users' => [
            'driver' => 'eloquent',
            # 「Models\」を追加
            'model' => App\Models\User::class,
        ],
...

# config/services.php
$ vim config/services.php
$ cat config/services.php
...
    'stripe' => [
        # 「Models\」を追加
        'model' => App\Models\User::class,
        'key' => env('STRIPE_KEY'),
        'secret' => env('STRIPE_SECRET'),
    ],
...