resources/views/layouts/app.blade.php
【navigation.blade.php】
Auth:: で始まるコード3か所を以下のように修正
<div>@if(Auth::check()) {{ Auth::user()->name }} @endif</div>
<!-- Responsive Settings Options -->
<div class="font-medium text-base text-gray-800">@if(Auth::check()) {{ Auth::user()->name }} @endif</div>
<div class="font-medium text-sm text-gray-500">@if(Auth::check()) {{ Auth::user()->email }} @endif</div>
