Please help. Cannot run rasa shell because of pykwalify error

Hi, I encountered problem when running rasa shell. Here is the logs:

and the actions’ code:

class ActionHelloWorld(Action):

def name(self) -> Text:
    return "action_hello_world"

def run(self, dispatcher: CollectingDispatcher,
        tracker: Tracker,
        domain: Dict[Text, Any]) -> List[Dict[Text, Any]]:

    dispatcher.utter_message(text="Hello World!")

    return []

class ActionRandom(Action):

def name(self) -> Text:
    return "action_random"

def run(self, dispatcher: CollectingDispatcher,
        tracker: Tracker,
        domain: Dict[Text, Any]) -> List[Dict[Text, Any]]:

    counter = random.randrange(100, 200)
    dispatcher.utter_message("Random number: {}".format(counter))

    return []

class ActionCounter(Action):

counter = 0

def name(self):
    return "action_counter"

def run(self, dispatcher: CollectingDispatcher,
        tracker: Tracker,
        domain: Dict[Text, Any]) -> List[Dict[Text, Any]]:

    self.counter += 1
    dispatcher.utter_message("It's the {} time you activate me".format(self.counter))

    return []

Will be grateful for any help

Hi @Ksenia are you able to please run rasa shell --debug and then post the full debug log? Also, would be helpful if you could share the contents of config.yml file and the general structure of your project.