How to fix an authentication error?

Question

Laravel

One line of code from the documentation:
\Auth::login(1,true);
Throws an error:

FatalThrowableError in SessionGuard.php line 439:
Type error: Argument 1 passed to Illuminate\Auth\SessionGuard::login() must implement interface Illuminate\Contracts\Auth\Authenticatable, integer given

Answer 1

You are trying to login with ID.
Accordingly, there is a method for it:
Auth::loginUsingId(1);
Authenticate A User By ID
To log a user into the application by their ID, you may use the loginUsingId method. This method accepts the primary key of the user you wish to authenticate:
Auth::loginUsingId(1);
// Login and "remember" the given user...
Auth::loginUsingId(1, true);
https://laravel.com/docs/5.6/authentication

Answer 2

$user = User::where('id',1)->first();
\Auth::login($user,true);
dd(\Auth::id());
Everything works, but the authorization is not saved ...
Do I need to force saving somewhere else?