title: Ruby on Rails bundle exec rake assets:precompile error - no such file to load -- gelf
body: <p>When I run RAILS_ENV=production bundle exec rake assets:precompile I get:</p>
  
  <pre><code>Rake aborted!
  no such file to load -- gelf
  
  Tasks: TOP =&gt; environment
  (See full trace by running task with --trace)
  rake aborted!
  </code></pre>
  
  <p>if I run it with --trace I get:</p>
  
  <pre><code>** Invoke assets:precompile:all (first_time)
  ** Execute assets:precompile:all
  ** Invoke assets:precompile:primary (first_time)
  ** Invoke assets:environment (first_time)
  ** Execute assets:environment
  ** Invoke environment (first_time)
  ** Execute environment
  rake aborted!
  no such file to load -- gelf
  /Users/gareth/.rvm/gems/ruby-1.9.2-p320/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:251:in `require'
  /Users/gareth/.rvm/gems/ruby-1.9.2-p320/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:251:in `block in require'
  /Users/gareth/.rvm/gems/ruby-1.9.2-p320/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:236:in `load_dependency'
  /Users/gareth/.rvm/gems/ruby-1.9.2-p320/gems/activesupport-3.2.3/lib/active_support/dependencies.rb:251:in `require'
  /Users/gareth/enghance/config/initializers/graylog.rb:1:in `&lt;top (required)&gt;'
  </code></pre>
  
  <p>I havent been able to find any solution, or question with the same error so I'm thinking it might be something basic.</p>
  
  <p>Is there anyone who has had the same problem and figured it out or knows what's going wrong?</p>