Error while getting latest user message(self.from_text()) in a slot from console

Rasa Open Source
1

i want the complete input from user to be stored in the slot named ‘doc_desc’ but i am getting an error :Received request to run 'form_2' DEBUG:rasa_core_sdk.forms:There is no active form DEBUG:rasa_core_sdk.forms:Activated the form 'form_2' DEBUG:rasa_core_sdk.forms:Skipping validation **ERROR:flask.app:Exception on /webhook [POST]** Traceback (most recent call last): File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 2292, in wsgi_app response = self.full_dispatch_request() File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 1815, in full_dispatch_request rv = self.handle_user_exception(e) File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\flask_cors\extension.py", line 161, in wrapped_function return cors_after_request(app.make_response(f(*args, **kwargs))) File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 1718, in handle_user_exception reraise(exc_type, exc_value, tb) File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\_compat.py", line 35, in reraise raise value File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 1813, in full_dispatch_request rv = self.dispatch_request() File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\flask\app.py", line 1799, in dispatch_request return self.view_functions[rule.endpoint](**req.view_args) File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\flask_cors\decorator.py", line 128, in wrapped_function resp = make_response(f(*args, **kwargs)) File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\rasa_core_sdk\endpoint.py", line 83, in webhook response = executor.run(action_call) File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\rasa_core_sdk\executor.py", line 177, in run events = action(dispatcher, tracker, domain) File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\rasa_core_sdk\forms.py", line 392, in run domain) File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36\lib\site-packages\rasa_core_sdk\forms.py", line 279, in request_next_slot **for slot in self.required_slots(tracker):** **TypeError: required_slots() takes 1 positional argument but 2 were given** 127.0.0.1 - - [2019-02-12 14:15:10] "POST /webhook HTTP/1.1" 500 412 0.046816

My action_form.py contains: `# -- coding: utf-8 -- from typing import Dict, Text, Any, List, Union

from rasa_core_sdk import ActionExecutionRejection from rasa_core_sdk import Action, Tracker from rasa_core_sdk.events import SlotSet from rasa_core_sdk.executor import CollectingDispatcher from rasa_core_sdk.forms import FormAction, REQUESTED_SLOT

class form_1(FormAction): “”“Example of a custom form action”""

def name(self): # type: () -> Text “”“Unique identifier of the form”""

   return "form_1"

@staticmethod def required_slots(tracker) -> List[Text]: # type: () -> List[Text]

   return ["region", "rel"]

def slot_mapping(self, tracker):

   return {"region": self.from_entity(entity="region"), "rel": self.from_entity(entity="rel")}

def submit(self, dispatcher, tracker, domain): # type: (CollectingDispatcher, Tracker, Dict[Text, Any]) -> List[Dict] “”“Define what the form has to do after all required slots are filled”""

   # utter submit template
   dispatcher.utter_template('utter_submit', tracker)
   return []

class form_2(FormAction): def name(self): return “form_2”

def required_slots(tracker): # type: () -> List[Text]

   return ["doc_desc"]

def slot_mapping(self):

   return {"doc_desc": self.from_text()}

def submit(self, dispatcher, tracker, domain): # type: (CollectingDispatcher, Tracker, Dict[Text, Any]) -> List[Dict] “”“Define what the form has to do after all required slots are filled”""

   # utter submit template
   dispatcher.utter_message(tracker.get_slot('doc_desc'))
   dispatcher.utter_template('utter_submit', tracker)
   return []

where is the error, and how do i store the latest text from user into slot name 'doc_desc'. Is there any error in my endpoints.yml? the code there is: action_endpoint: url: “http://localhost:5055/webhook”`

2

The error appears to be in your actions file in the required slots

TypeError: required_slots() takes 1 positional argument but 2 were given According to the code you posted, there is a syntax error. Colon is in the wrong place.

@staticmethod 
def required_slots(tracker): # -> List[Text] # type: () -> List[Text]
    return ["region", "rel"]
4

Thank you for replying. I changed and made the correction but still getting the same error. Just to make sure, the error is actually occurring in form_2. The form_1 is extracting entities in the usual manner. Is there a different command to get latest user text as input into a slot from the console vs from an api? I am really confused.

5

The way you’re accessing the latest slot is right, even the action endpoint seems fine, not sure why the error.

7

It is this way even on windows terminal, right(to get latest user input)? I am breaking my head but cannot find why this is happening.

8

I don’t think the whole text is going into the slot. Looking at the docs, the from_text() is to extract slots from the latest text message, similar to from_intent() and from_entities(). It will extract slots from the message, not the message itself.

1 Like
10

Thanks a lot for the concern. After exploring, i coded the form_action.py as:

class form_2(FormAction):
   def name(self):
       return "form_2"

   def run(self, dispatcher, tracker, domain):
 
       message = tracker.latest_message.get('text')
       SlotSet('doc_desc', message)
       dispatcher.utter_message(tracker.get_slot('doc_desc'))
       return ['doc_desc']

However i am still getting an error on the console where the bot is active as:

Enter the document description 2019-02-12 20:11:31 ERROR rasa_core.processor - Encountered an exception while running action ‘form_2’. Bot will continue, but the actions events are lost. Make sure to fix the exception in your custom code. 127.0.0.1 - - [2019-02-12 20:11:31] “POST /webhooks/rest/webhook?stream=true&token= HTTP/1.1” 200 249 2.205089

But the console where the action point is running says:

127.0.0.1 - - [2019-02-12 20:11:29] “POST /webhook HTTP/1.1” 200 441 0.000000 DEBUG:rasa_core_sdk.executor:Received request to run ‘form_2’ DEBUG:rasa_core_sdk.executor:Successfully ran ‘form_2’ 127.0.0.1 - - [2019-02-12 20:11:31] “POST /webhook HTTP/1.1” 200 192 0.000000

Why is this happening?

11

Okay, since you have only one slot and you want to capture the whole message don’t use form actions, just create a custom action and store the message. Form actions are just like filling a form which has a series of questions which the user needs to provide.

The error you’re getting might be due to the Slot not being set. You can do it this way using a normal action.

class Actionform_2(Action):
   def name(self):
       return "form_2"

   def run(self, dispatcher, tracker, domain):
 
       message = tracker.latest_message.get('text')
       dispatcher.utter_message(message)
       return [SlotSet('doc_desc', message)] #slot value can only be set by returning it
3 Likes
13

Thank you so much!