laravel 5.3: ErrorException in UrlGenerator.php line 314: Route [] not defined

Here my routes code in web.php

Route::get('/login', array("as" => "login-admin", 'uses' => 'Auth\LoginController@login'));

Controller method:

public function login()
{
    return view('admin-access.login_form');

}

Error message show: ErrorException in UrlGenerator.php line 314: Route [] not defined. (View: /var/www/html/lara_project/cust-todo/resources/views/admin-access/login_form.blade.php). How i can solve that problem.

via Chebli Mohamed