Err msg: ImportError: cannot import name 'serve_application' in the new Weatherbot


I’m new to Rasa and I am learning by following the Weatherbot example. When I tried to train the dialogue manager, I get an error message:

ImportError: cannot import name ‘serve_application’

I look through the code and I just can’t find where this problem might come from. Any suggestion where to look?

I’m using rasa_nlu version 0.13.1 and rasa_core version 0.10.3

Thank you for your help!