Laravel: Auth::user()->id Trying to get property 'name' of non-object

i'm Getting an error 'Trying to get property 'name' of non-object ' when i Trying to open dashboard page

There is my codes :

in UserController.php

    public function index(Request $request)
{
    $result = User::orderBy('name','asc')->get();
    return view('admin.user.index',[ 'data'=>$result ]);
}

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