C1-W1 error getting sentiment count

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/interval.py)

I see that I missed the very first import cell (hence why I was having to import things as I went). FYI - for anyone else who runs into this

Can you please check whether you are running in the right kernal or not