location#show (NoMethodError) "undefined method `[]' for nil:NilClass"

[cgansen]

Via emailed exception:

A NoMethodError occurred in location#show:

  undefined method `[]' for nil:NilClass
  app/views/location/show.html.haml:1:in `_app_views_location_show_html_haml___2779973647617165848_53666900'

-------------------------------
Request:
-------------------------------

  * URL       : http://locations.weconnectchicago.org/location/back-of-the-yards-library-4650-s-damen-avenue
  * IP address: 173.199.115.147
  * Parameters: {"action"=>"show", "controller"=>"location", "id"=>"back-of-the-yards-library-4650-s-damen-avenue"}
  * Rails root: /app
  * Timestamp : 2013-02-24 08:09:08 -0600

-------------------------------
Session:
-------------------------------

  * session id: nil
  * data: {}