check authentication on Laravel schedule

I have schedule like this

$schedule->call(function () {
     $mial->getMail(Auth::user()->id);
})->everyMinute();

show me this error

In Kernel.php line 37:

Trying to get property of non-object

When I run this command show me this error again

$schedule->call(function () {
    echo Auth::user()->id;
})->everyMinute();

I need to be check authentication.

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