text: Title: 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.
  Body: **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
  
  ![image](https://user-images.githubusercontent.com/50951647/205797658-be405915-971f-44c5-90a1-ca079b4b2470.png)
  
  