Question: I am using Rasa core v10.2, with custom actions, but getting `utter_template() missing 1 required positional argument: 'tracker'` error on the run function.

**Custom action file: (actions.py)**

```
from rasa_core.actions import Action
from rasa_core.events import SlotSet

class searchJob(Action):
    def name(self):
        return 'action_search'

    def run(self, dispatcher, tracker, domain):
        return [SlotSet("jobsname", "as_aggregate")]

```

**domain.yml:**

```
slots:
  jobsname:
    type: text

templates:
 utter_answer:
    - text: "The required jobs are {jobsname}"

```

Stories:

```
* search
  - action_search
  - utter_answer

```

The output is `[{'recipient_id': 'default', 'text': 'The required jobs are None'}]` which means the Slot it not set. Could the error message be the cause of it?

Thank you.

Answer: 
Are you sure you are looking at the right custom action? I had the same error message because in one of my custom action I was using `dispatcher.utter_template()` like this:

`dispatcher.utter_template('utter_something')`

and apparently `tracker` is now a required argument, i.e. I add `tracker` like this:

`dispatcher.utter_template('utter_something', tracker)` 

and the error is gone.

PS: I know this should be a comment, but I am not allowed since my reputation is not high enough.
So the issue seems to be the name of the custom action file, change it to anything else from 'actions' will do.