undefined variable in laravel 10 when try to routes

i try to create qr viewer which is collecting text from databases, and show it as a Qr code. but it’s always get me an error where qr_codes not defined

this my controller code

<?php

namespace AppHttpControllers;
use IlluminateSupportFacadesDB;
use IlluminateHttpRequest;
use AppHttpControllersController;
use ApphttpRequests;

class QrCodeController extends Controller{
    public function index(){
        $qr_codes = DB::select('select * from qr_code');
        return view ('QRcodeviewer',['qr_code'=>$qr_codes]);
    }
}

and here my blade view code

@extends('layouts.dashboard')
    @section('content')
        <div class="container mt-4">
            <div class="card">
                <div class="card-header">
                    <h2>QR Absen</h2>
                </div>
                <div class="card-body">
                    {{ QrCode::size(300)->generate(Route('QRCodeviewer',$qr_codes->uuid)) }}
                </div>
            </div>
        </div>
    @endsection

and this my routes

Route::get('QRcodeviewer','QrCodeController@index');