mochiweb request loop error display code.erl

loop(Request) ->
    try
        process(Request)
    catch
        Class:Exception ->
            Req:respond({500, [{"Content-Type", "text/plain"}],
                         io_lib:format("Couldn't process request ~p~n"
                                       "Exception: ~p:~p~n"
                                       "StackTrace:~p~n", [Request:dump(), Class, Exception,
                                                          erlang:get_stacktrace()])})
    end.