Hey I am getting the same problem
c:\users\dell\desktop\weatherchatbot\env\lib\site-packages\rasa\shared\utils\common.py", line 17, in class_from_module_path
if "." in module_path:
TypeError: argument of type ‘NoneType’ is not iterable
Rasa Version : 2.0.0
Rasa SDK Version : 2.0.0
Rasa X Version : None
Python Version : 3.6.8
Operating System : Windows-10-10.0.18362-SP0