Run 'rails server' on production
<p>I'm got a Rails 4.2.5 application and I need to run 'rails server' on production, I tried some answers <a href="https://stackoverflow.com/questions/1949229/change-a-rails-application-to-production">here</a>:</p>

<pre><code>rails server -e production

RAILS_ENV=production rails s
</code></pre>

<p>But I get this error:</p>

<blockquote>
  <p>missing region; use :region option or export region name to
  ENV['AWS_REGION'] (Aws::Errors::MissingRegionError)</p>
</blockquote>

<p>Am I missing some configurations?</p>