laravelのルーティングが上手くいかない

前提・実現したいこと

https://qiita.com/miriwo/items/fa6e7904f82251434afd
上記のサイトを参考にlaraveでwebアプリを作成してます。
http://127.0.0.1:8000/contents/create　にアクセスしようとしたところ404　NOT FOUNDと表示されてしまします
どこが間違っているのでしょうか？

該当のソースコード

web.app

<?php

use Illuminate\Foundation\Application;
use Illuminate\Support\Facades\Route;
use Inertia\Inertia;
use App\Http\Controllers\ContentController;

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/

Route::get('/', function () {
    return Inertia::render('Welcome', [
        'canLogin' => Route::has('login'),
        'canRegister' => Route::has('register'),
        'laravelVersion' => Application::VERSION,
        'phpVersion' => PHP_VERSION,
    ]);
});


Route::middleware(['auth:sanctum', 'verified'])->get('/dashboard', function () {
    return Inertia::render('Dashboard');
})->name('dashboard');

Route::prefix('contents')->group(function() {
    Route::get('/list', [ContentController::class, 'list'])->name('contents.list');
    Route::get('/create', [ContentController::class, 'create'])->name('contents.create');
    Route::get('/update/{content_id}', [ContentController::class, 'update'])->name('contents.update');
    Route::get('/delete/{content_id}', [ContentController::class, 'delete'])->name('contents.delete');
    Route::post('/save', [ContentController::class, 'save'])->name('contents.save');
});