ImportError: cannot import name 'concat_url'

Hello

i installed rasa x in a fresh conda (windows 10, python 3.6) enviroment following the guide. When running rasa x in the project directory i get the error:

File “c:\anaconda\envs\rasa_x\lib\site-packages\rasax\community\services\stack_service.py”, line 10, in from rasa.core.utils import concat_url, dump_obj_as_yaml_to_string ImportError: cannot import name ‘concat_url’

pip install rasa==1.0.3

fixed it for me