How to define action inside form in laravel?

I simply want to add an action to a form and I am trying as follows:

But I am getting the following error:

Action App\Http\Controllers\AuthController@login not defined. (View: D:\server\htdocs\PMS\resources\views\custom_auth\login.blade.php)

I configure laravel collective Html. Whats wrong in my code?

via Chebli Mohamed