when the user type something that the nlu can’t understand or extract slots from i got this error which is expected,
but i want also to send a message for the user to like "i don't understand, can you repeat that"
with that error
i tried this
if not slot_values:
dispatcher.utter_message("sorry couldn't get that,")
raise ActionExecutionRejection(self.name(), "Failed to validate slot {0} , "with action {1}"
"".format(slot_to_fill, self.name()))
but the message doesn’t appear for user, any help with that?