400
<% if !@traceback %>
The request could not be processed
The request was malformed, e.g. it used an invalid parameter encoding.
<% if @message.present? %><%= @message %>
<% end %> <% else %>
<%= @exception.message %>
<% if @exception.backtrace %>
<% @exception.backtrace.each {|row| %>
<%= row %>
<% } %>
<% end %>
<% end %>