Template is missingのエラーが発生しました。

前提・実現したいこと

cloud9を使いrailsでアプリケーションを作っていたのですが、コメント機能を非同期で作っていたところ、Template is missingのエラーが発生しました。コードを見直してもおかしなところは見つからず、どこを修正すれば良いか困っています。

発生している問題・エラーメッセージ

該当のソースコード

public/posts/show.html.erb

 <div class="comment">
        <div class="comment-count">
          <%= @post.comments.count %>件コメント
        </div>
            <div id="comments_area">
              <%= render partial: 'public/comments/index', locals: { comments: @comments,user: @user } %>
            </div>
            <% if user_signed_in? %>
              <div class="comment-create">
                <h3 class="text-left">レビューを投稿する</h3>
                <%= render partial: 'public/comments/form', locals: { comment: @comment, user: @user, post: @post} %>
              </div>
            <% end %>
          </div>

routes.rb

namespace :public, path: "" do
  get 'users/mypage/:id' => 'users#mypage'
  resources :users, only: [:edit, :update ,:index , :show] do
    resources :posts, only: [:index,:create,:show,:edit,:update, :destroy] do
    delete 'post_item_destroy'
    post 'post_item_create'
    resources :post_items, only: [:destroy, :index]
    resources :likes, only: [:create, :destroy]
    resources :comments, only: [:create, :destroy]
  end
    get 'search_posts', to: 'posts#search'
    resource :relationships, only: [:create, :destroy]
    get 'followings' => 'relationships#followings', as: 'followings'
    get 'followers' => 'relationships#followers', as: 'followers'
    resource :favorites, only: [:create, :destroy]
  end
  resources :messages, only: [:create]
  resources :rooms, only: [:create,:show, :index]
  get '/profiles/mypage' => 'profiles#mypage'
    resources :tags, only: [:show]
  end
  devise_for :admins
end

comments/_index.html.erb

<div class="container">
  <div class="row">
    <div class="col">
      <div class="comments">
        <h6 class="more m-2" data-toggle="collapse" data-target="#collapseExample" aria-expanded="false" aria-controls="collapseExample">もっと見る....</h6>
        <% @comments.first(2).each do |comment| %>
          <% unless comment.id.nil? %>
            <div class="comment-container m-2">
              <div class="comment-box">
                <div class="comment-item d-flex">
                  <div class="comment-avatar">
                    <%= attachment_image_tag comment.user, :image, fallback: "no_image.jpg", class:"comment-image", size: "40x40" %>
                  </div>
                  <div class="comment-text mt-3 ml-3">
                    <p><%= link_to "@#{comment.user.full_name}", public_path(comment.user.id) %></p>
                  </div>
                  <span class="comment-date pull-right">
                    <p class="mt-3 ml-3"><%= comment.created_at.strftime('%Y/%m/%d %H:%M:%S') %></p>
                  </span>
                </div>
                <div class="comment-entry mb-3">
                  <%= comment.comment_content %>
                  <% if comment.user_id == current_user.id %>
                    <%= link_to public_user_post_comment_path(comment.user.id, comment.post_id, comment.id), method: :delete, remote: true, class: "comment_destroy" do %>
                      <i class="fas fa-trash" style="color: black;"></i>
                    <% end %>
                  <% end %>
                </div>
              </div>

            </div>
          <% end %>
        <% end %>

        <div class="collapse m-2" id="collapseExample">
          <% comments.offset(2).each do |comment| %>
            <% unless comment.id.nil? %>
              <div class="comment-container m-2">
                <div class="comment-box">
                  <div class="comment-item d-flex">
                    <div class="comment-avatar">
                      <div><%= attachment_image_tag comment.user, :image, fallback: "no_image.jpg", class:"comment-image", size: "40x40" %></div>
                    </div>
                    <div class="comment-text mt-3 ml-3">
                      <p><%= link_to "@#{comment.user.full_name}", public_path(comment.user.id) %></p>
                    </div>
                    <span class="comment-date pull-right mt-3 ml-3">
                      <%= comment.created_at.strftime('%Y/%m/%d %H:%M:%S') %>
                    </span>
                  </div>
                  <div class="comment-entry mb-4">
                    <%= comment.comment_content %>
                     <% if comment.user_id == current_user.id %>
                        <%= link_to    public_user_post_comment_path(comment.user.id, comment.post_id, comment.id), method: :delete, remote: true, class: "comment_destroy" do %>
                            <i class="fas fa-trash" style="color: black;"></i>
                        <% end %>
                    <% end %>
                  </div>
                </div>

              </div>
            <% end %>
          <% end %>
        </div>
      </div>
    </div>
  </div>
</div>

index.js.erb

$("#comments_area").html("<%= j(render 'index', { comments: @comment.user.comments }) %>")
$("textarea").val('')

_form.html.erb

<%= form_with model: @comment, url:  public_user_post_comments_path(@user.id, @post.id, @comment.id),remote: true do |f| %>
    <%= f.text_area :comment_content, class: "input-mysize" %>
    <%= f.submit "送信", class: "btn btn-outline-dark comment-submit float-right" %>
<% end %>