I am having my code as below

```
<%= div_for(comment) do %>
<div class="comments_wrapper clearfix">
    <div class="pull-left">
        <p class="lead"><%= comment.body %></p>
        <p><small>Submitted <strong><%= time_ago_in_words(comment.created_at) %> ago</strong> by <%= comment.user.name %></small></p>
    </div>

```

I am using Rails v5.0, Ruby 2.3.1 versions. 
When I run the application using "rails s" command.

It throws the following error. 

> 
> Error:RecordTagHelper.
> 
> 
> 

What could be the reason?