Laravel 6.0 php artisan route：list 返回目标类 [App\Http\Controllers\SessionsController] 不存在.

我使用的是Laravel 6.0，我试图用artisan route:list列出我的所有路由，但它失败并返回:

Illuminate\Contracts\Container\BindingResolutionException:目标 类[App\http\Controlders\SessionsController]不存在.

at /home/vagrant/code/vendor/laravel/framework/src/Illuminate/Container/Container.php:806 802| 803| try { 804| $reflector = new ReflectionClass($concrete); 805| } catch (ReflectionException $e) { > 806| throw new BindingResolutionException("Target class [$concrete] does not exist.", 0, $e); 807| } 808| 809| // If the type is not instantiable, the developer is attempting to resolve 810| // an abstract type such as an Interface or Abstract Class and there is

异常跟踪:

1 Illuminate\Foundation\Console\RouteListCommand::Illuminate\Foundation\Console{closure}(Object(Illuminate\Routing\Route)) [internal]:0

2 ReflectionException::("类App\Http\Controllers\SessionController不存在")

3 ReflectionClass::_构造("App\Http\Controllers\sessioncontroller")

到目前为止，我只有一个非常简单的网站.php路由文件:

Route::get('/', function () {
    return view('index');
});


Route::prefix('app')->group(function () {
    // Registration routes
    Route::get('registration/create', 'RegistrationController@create')->name('app-registration-form');
});


// Templates
Route::get('templates/ubold/{any}', 'UboldController@index');

知道我如何调试这个问题吗？