php namespace App Http Middleware use App Models User use Illuminate A

<?php 

namespace App\Http\Middleware;
use App\Models\User;
use Illuminate\Auth\Middleware\Auth;
use DB;
use Closure;

class LastOnlineAt
{

    public function handle($request, Closure $next)
    {
        if (auth()->guest()) {
            return $next($request);
        }
        else
        {
            $user = User::find(auth()->user()->id);
            $user->last_online_at = now();
            $user->timestamps = false;
            $user->save();
        }

        return $next($request);
    }
}