【Laravel5.7.28】Class App\Http\Controllers\AaaController does not existが解消できない

お世話になります。
現在、Laravelで開発を行なっており、途中から
Controller新規作成時にタイトルのエラーが発生した為、お力添えを頂けますと幸いです。

＜エラー内容＞

ReflectionException (-1)
Class App\Http\Controllers\AaaController does not exist

＜エラー内容詳細＞
以下の$reflector = new ReflectionClass($concrete);の箇所でエラーが
発生しているようでした。

/var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php
    }
 
    /**
     * Instantiate a concrete instance of the given type.
     *
     * @param  string  $concrete
     * @return mixed
     *
     * @throws \Illuminate\Contracts\Container\BindingResolutionException
     */
    public function build($concrete)
    {
        // If the concrete type is actually a Closure, we will just execute it and
        // hand back the results of the functions, which allows functions to be
        // used as resolvers for more fine-tuned resolution of these objects.
        if ($concrete instanceof Closure) {
            return $concrete($this, $this->getLastParameterOverride());
        }
 
        $reflector = new ReflectionClass($concrete);
 
        // If the type is not instantiable, the developer is attempting to resolve
        // an abstract type such as an Interface or Abstract Class and there is
        // no binding registered for the abstractions so we need to bail out.
        if (! $reflector->isInstantiable()) {
            return $this->notInstantiable($concrete);
        }
 
        $this->buildStack[] = $concrete;
 
        $constructor = $reflector->getConstructor();
 
        // If there are no constructors, that means there are no dependencies then
        // we can just resolve the instances of the objects right away, without

＜実施したこと＞
Twitter認証系のインストール

composer require abraham/twitteroauth
上記を実施後に
php artisan make:controller AaaController

該当ファイルがapp/Http/Controllersに作成されたことを
確認致しました。

<web.php>

Route::any('/aaa', 'AaaController@index');

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class AaaController extends Controller
{
    public function index(Request $req, $tag=null)
    {
  echo "test";
  exit();
    }
}
~

宜しくお願い致します。