Unable to run action server Rasa Demo - Sara

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On Rasa Demo Sara (GitHub - RasaHQ/rasa-demo: Sara - the Rasa Demo Bot: An example of a contextual AI assistant built with the open source Rasa Stack) running action server ( rasa run actions --actions demo.actions) does not work:

    2020-01-25 19:03:59 INFO     rasa_sdk.endpoint  - Starting action endpoint server...
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_explain_sales_form'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_chitchat'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_faqs'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_pause'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_store_unknown_product'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_store_unknown_nlu_part'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_store_bot_language'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_store_entity_extractor'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_set_onboarding'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_store_problem_description'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_greet_user'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_default_ask_affirmation'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_default_fallback'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_next_step'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_docs_search'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'action_forum_search'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'subscribe_newsletter_form'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'sales_form'.
    2020-01-25 19:03:59 INFO     rasa_sdk.executor  - Registered function for 'suggestion_form'.

Steps to reproduce:

On windows 10 using anaconda3 prompt shell:

    conda create -n myenv python=3.6 pip=19.3.1
    conda activate myenv
    cd rasa-demo
    pip install -r requirements.txt
    pip install -e .
    pip install sanic=19.9.0
    pip install sanic-plugins-framework==0.8.2