laravel - NotFoundHttpException in RouteCollection.php -

i use laravel 5!

in routes.php file have following request check admin requests in url:

 if (request::is('admin/*'))  {      require __dir__.'/admin_routes.php';  } 

in case in corresponding admin_routes.php file should return correct controller have:

 route::group(['prefix' => 'admin', 'middleware' => 'auth'], function() {       #admin dashboard      route::get('dashboard', 'admin\dashboardcontroller@index');  });  

i cleared route cache (php artisan route:clear) , error message: notfoundhttpexception in routecollection.php line 145 . ideas wrong? thank you

put routes in 1 file, since documentation others aswell. should kept simple can be.

then use route groups.

why need include other files?