问为什么我要经常犯这个错误呢？

EN

<?php

public function index() {
    $posts = Post::orderBy('created_at','ASC')->paginate(15);
    return view('blog.posts.index')->withPosts($posts);
}

public function post($slug) {

    // Fetch from the database based on slug.
    $post = Post::where('slug', '=', $slug)->first();

    // Return the view and pass the post object.
    return view('blog.posts.post')->withPost($post);
}

<!-- Main Content -->
<div class="container" id="load-data">
  <div class="row">
    <div class="col-lg-8 col-md-10 mx-auto">
      @foreach($posts as $post)
      <div class="post-preview">
        <a href="{{ url('blog/posts/'.$post->slug) }}" role="button">
          <h2 class="post-title">
            {{ $post->title }}
          </h2>
          <h3 class="post-subtitle">
            {{ $post->desc }}
          </h3>
        </a>
        <p class="post-meta">Posted on {{ date('F j, Y', strtotime($post->created_at)) }}</p>
      </div>
      <hr> @endforeach
    </div>
  </div>
</div>

Route::prefix('/blog/posts')->group(function () {

Route::get('/', 'BlogController@index')->name('posts'); });