Error on week 1 assignment

I am failing to get “how many reviews per sentiment?”. I am getting this error.

ImportError: cannot import name ‘VALID_CLOSED’ from ‘pandas.core.arrays.interval’ (/opt/conda/lib/python3.7/site-packages/pandas/core/arrays/

can you help please

Hi, how did you resolve the issue?

According to the coursera course questions over here are monitored. But I don’t see any solution to this question. I’m having the same problem. How can we get support?

Why is there no support or reply form the course management or TA’s if there is one?
I am unable to find solution for this anywhere.