anchor.diff:          {error, {File, [{0, _Module, "Failed to read file"}]}} ->
               {not_found, io_lib:format("The requested template (~p) was not found.", [File]) };
           {error, Error}->
  -            render_errors([Error], AppInfo, Req)
  +            render_errors([Error], AppInfo, RequestContext)
       end.
   
   choose_translation_fun(_, _, undefined, undefined) ->
  
positive.code:         {ok, OtherLocation} ->
              {redirect, OtherLocation};
          not_found ->
              render_error(io_lib:print(Payload), [], AppInfo, Req)
      end.
  
  process_stream_generator(_Req, _TransferEncoding, 'HEAD', _Generator, _Acc) ->
  
negative.code: 
              Result = case AuthInfo of
                  {ok, Info} ->
                      execute_action1(Adapter, AdapterInfo, Info, Location, AppInfo, [{request, Req}, {session_id, SessionID1}], LocationTrail);
                  {redirect, Where} ->
                      {redirect, process_redirect(Controller, Where, AppInfo)}
              end,
  