当我想在Laravel 5.8中使用模型绑定时出现此错误

public function boot(Router $router)
    {
        parent::boot($router);

        $router->model('article','App\article');
    }
Route::resource('article','articleController');
App \ Providers \ RouteServiceProvider :: boot的声明(App \ Providers \ Router $ router)应与Illuminate \ Foundation \ Support \ Providers \ RouteServiceProvider :: boot()兼容