redirect too many times laravel

I try to use redirect->action It error too many redirect in my Controller

try {
  //If check urL category null
  if (is_null($category)){
      Log::error("[Front] MenuController@menu : notfound public category ");

      //error redirect
       return redirect()->action('Front\HomeSlideviewController@index', $url);
  }
} catch (\Exception $e) {
    return 'error';
}   

here is my web.php

  Route::get('/{url?}', 'MenuController@menu');
  Route::get('/{name?}', 'HomeSlideviewController@index')->name('promotiondetail');

I try to make a fucntion if Url is empty use redirect action

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