<% if @error_message %> {"success": false, "message": <%= raw @error_message.encode("utf-8", {:invalid => :replace, :undef => :replace, :replace => "?"}).to_json %>} <% else %> { "success": false, "message": <%= raw @exception.to_s.encode("utf-8", {:invalid => :replace, :undef => :replace, :replace => "?"}).to_json %>, "backtrace": <%= raw @exception.backtrace.to_json %> } <% end %>