Команда получения ошибки не существует в планировании задач Laravel

Я следую этому уроку: https://www.sitepoint.com/managing-cronjobs-with-laravel/

но когда я набираю в командной строке php artisan make:list я получаю сообщение об ошибке

  [ReflectionException]
Class App\Console\Command\Test123 does not exist

Как исправить вышеуказанную проблему? Что я делаю неправильно?

<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Carbon\Carbon;

use Response;
use Config;
use DB;
use GuzzleHttp\Exception\GuzzleException;
use GuzzleHttp\Client;

class Test123 extends Command
{
/**
* The name and signature of the console command.
*
* @var string
*/
protected $signature = 'abcd';

/**
* The console command description.
*
* @var string
*/
protected $description = 'some description';

/**
* Create a new command instance.
*
* @return void
*/
public function __construct()
{
parent::__construct();
}

/**
* Execute the console command.
*
* @return mixed
*/
public function handle()
{
$parameters = [
'attribute1' => 'val1',
'attribute2' => 'val2',
'_token' => Config::get('app.secret')
];
$formattedParameters = http_build_query($parameters);
$statusCode = 200;
$url = "url?{$formattedParameters}";

$client = new Client();
$res = $client->get($url);

$jsonArray = json_decode($res->getBody(),true);
$field1= $jsonArray['field1'];

DB::table('table_name')->insert(
['field1' => $field1]
);
}
}

<?php

namespace App\Console;

use Illuminate\Console\Scheduling\Schedule;
use Illuminate\Foundation\Console\Kernel as ConsoleKernel;
use Carbon\Carbon;

use Response;
use Config;
use DB;
use GuzzleHttp\Exception\GuzzleException;
use GuzzleHttp\Client;class Kernel extends ConsoleKernel
{
/**
* The Artisan commands provided by your application.
*
* @var array
*/
protected $commands = [
\App\Console\Command\Test123::class,
];

/**
* Define the application's command schedule.
*
* @param  \Illuminate\Console\Scheduling\Schedule  $schedule
* @return void
*/
protected function schedule(Schedule $schedule)
{

$schedule->command('abcd')->everyMinute();}

/**
* Register the Closure based commands for the application.
*
* @return void
*/
protected function commands()
{
require base_path('routes/console.php');
}
}