error

 Showing C:/Sites/rails_studio/flix/app/views/movies/index.html.erb where line #16 raised:

undefined method `>' for nil:NilClass

<td><%= time_ago_in_words(movie.released_on) %> ago</td>

index.rb

<h1><%= pluralize(@movies.size, 'Movie') %></h1>

<% @movies.each do |movie| %>
    <article>
      <header>
        <h2><%= movie.title %></h2>
      </header>
      <p>
        <%= truncate(movie.description, length: 40, separator: ' ') %>
      </p>
      <table>
        <tr>
          <th>Released:</th>
          <td><%= movie.released_on %></td>
        </tr>
        <td><%= time_ago_in_words(movie.released_on) %> ago</td>   # When I add time_ago_in_words() I get the error I post below
          <th>Rating:</th>
          <td><%= movie.rating %></td>
        </tr>
        <tr>
          <th>Total Gross:</th>
          <td><%= number_to_currency(movie.total_gross) %></td> 
        </tr>
      </table>
    </article>
<% end %>