Ruby on Rails错误消息的日志含义

Question

我从本教程制作了博客应用程序： http://guides.rubyonrails.org/getting_started.html

使用Cloud9的开发者环境。制作博客后，我将其推送到Heroku，但发现了一个问题：我的链接不起作用。

每当我点击链接时，都会弹出：

当我在应用程序中转到我的错误日志时，这就是我得到的：

Started GET "/articles" for 144.162.213.240 at 2016-02-15 16:41:18 +0000
Cannot render console from 144.162.213.240! Allowed networks: 127.0.0.1, ::1, 127.0.0.0/127.255.255.255
Processing by ArticlesController#index as HTML
  Article Load (0.4ms)  SELECT "articles".* FROM "articles"
  Rendered articles/index.html.erb within layouts/application (153.5ms)
Completed 200 OK in 207ms (Views: 205.5ms | ActiveRecord: 0.4ms)

以下是代码：

APPLICATION_CONTROLLER

class ApplicationController < ActionController::Base
  # Prevent CSRF attacks by raising an exception.
  # For APIs, you may want to use :null_session instead.
  protect_from_forgery with: :exception
end

ARTICLES_CONTROLLER

class ArticlesController < ApplicationController
  def index
    @articles = Article.all
  end

  def show
    @article = Article.find(params[:id])
  end

  def new
    @article = Article.new
  end

  def edit
    @article = Article.find(params[:id])
  end

  def create
    @article = Article.new(article_params)

    if @article.save
      redirect_to @article
    else
      render 'new'
    end
  end

  def update
    @article = Article.find(params[:id])

    if @article.update(article_params)
      redirect_to @article
    else
      render 'edit'
    end
  end

  def destroy
    @article = Article.find(params[:id])
    @article.destroy

    redirect_to articles_path
  end

  private
    def article_params
      params.require(:article).permit(:title, :text)
    end
end

WECLOME_CONTROLLER

class WelcomeController < ApplicationController
  def index
  end
end

EDIT.HTML.ERB

<h1>Editing article</h1>

<%= form_for :article, url: article_path(@article), method: :patch do     |f| %>

  <% if @article.errors.any? %>
    <div id="error_explanation">
      <h2>
        <%= pluralize(@article.errors.count, "error") %> prohibited
        this article from being saved:
      </h2>
      <ul>
        <% @article.errors.full_messages.each do |msg| %>
          <li><%= msg %></li>
        <% end %>
      </ul>
    </div>
  <% end %>

  <p>
    <%= f.label :title %><br>
    <%= f.text_field :title %>
  </p>

  <p>
    <%= f.label :text %><br>
    <%= f.text_area :text %>
  </p>

  <p>
    <%= f.submit %>
  </p>

<% end %>

<%= link_to 'Back', articles_path %>

INDEX.HTML.ERB

<h1>Janke Chat</h1>

<table>
  <tr>
    <th>Title</th>
    <th>Text</th>
    <th colspan="3"></th>
  </tr>

  <% @articles.each do |article| %>
    <tr>
      <td><%= article.title %></td>
      <td><%= article.text %></td>
      <td><%= link_to 'SHOW', article_path(article) %></td>
      <td><%= link_to 'EDIT', edit_article_path(article) %></td>
      <td><%= link_to 'DESTROY', article_path(article),
              method: :delete,
              data: { confirm: 'Are you sure?' } %></td>
    </tr>
  <% end %>
</table><br>

<%= link_to 'POSTS', controller: 'articles' %> |
<%= link_to 'NEW POST', new_article_path %> |
<a href = "https://fathomless-beyond-24190.herokuapp.com">HOME</a>

NEW.HTML.ERB

<%= form_for :article, url: articles_path do |f| %>

  <% if @article.errors.any? %>
    <div id="error_explanation">
      <h2>
        <%= pluralize(@article.errors.count, "error") %> prohibited
        this article from being saved:
      </h2>
      <ul>
        <% @article.errors.full_messages.each do |msg| %><br>
          <p><%= msg %></p>
        <% end %>
      </ul>
    </div>
  <% end %>

  <p>
    <%= f.label :title %><br>
    <%= f.text_field :title %>
  </p>

  <p>
    <%= f.label :text %><br>
    <%= f.text_area :text %>
  </p>

  <p>
    <%= f.submit %>
  </p>

<% end %>

<a href = "http://recipemanager-janaaron97.c9users.io">Go back home</a>

SHOW.HTML.ERB

<p>
  <strong>Title:</strong>
  <%= @article.title %>
</p>

<p>
  <strong>Text:</strong>
  <%= @article.text %>
</p>

<%= link_to 'POSTS', controller: 'articles' %> |
<%= link_to 'NEW POST', new_article_path %> |
<%= link_to 'EDIT', edit_article_path(@article) %><br><br>
<a href = "http://recipemanager-janaaron97.c9users.io">HOME</a>

另外，这是我网站的链接： https://fathomless-beyond-24190.herokuapp.com

谢谢！