C:\Users\mukta\anaconda3\lib\site-packages\IPython\core\formatters.py:918: UserWarning: Unexpected error in rendering Lux widget and recommendations. Falling back to Pandas display.

[muktaraut12]

Describe the bug
C:\Users\mukta\anaconda3\lib\site-packages\IPython\core\formatters.py:918: UserWarning:
Unexpected error in rendering Lux widget and recommendations. Falling back to Pandas display.

It occured while using GroupBy function in pandas module

To Reproduce
Please describe the steps needed to reproduce the behavior. For example:

1. Using this data: df = pd.read_csv("Play Store Data.csv")
2. Go to 'df1.groupby(['Category', 'Content Rating']).mean()'
3. See error

File "C:\Users\mukta\anaconda3\lib\site-packages\altair\utils\core.py", line 307, in sanitize_dataframe
raise ValueError("Hierarchical indices not supported")
ValueError: Hierarchical indices not supported