Laravel 5.6 share auth id issue

I want to pass user id in the boot function of the AppServiceProvider class (as it written in the docs) but for some reason Auth::user() object is empty.

myAppName/app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Facades\URL;

use Illuminate\Support\Facades\View;
use Illuminate\Support\Facades\Auth;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        Schema::defaultStringLength(191);
        URL::forceScheme('https');
        View::share('user_info', Auth::user());
    }

    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }
}

And then in in some blade template:

<p></p>

As a result an error occurs:

Trying to get property 'id' of non-object

There is same error if want to pass Auth::user()->id

How to make it work?

via Chebli Mohamed