Error in Data Exploration.ipynb notebook

[Diego Zumárraga Mera]

When I try to run the cells 32: print(df_students.groupby(df_students.Pass).Name.count()) and cell 33: print(df_students.groupby(df_students.Pass)['StudyHours', 'Grade'].mean())
I get this error: ValueError: Grouper for '<class 'pandas.core.frame.DataFrame'>' not 1-dimensional

I am using the Python 3.6 - AzureML Kernel.

Thank you

[Graeme Malcolm]

I can't repro this I'm afraid. I've tried with a brand new compute instance.