Traceback (most recent call last):
  File "app.py", line 5, in <module>
    from fastai.vision.widgets import *
  File "/home/user/.local/lib/python3.8/site-packages/fastai/vision/widgets.py", line 9, in <module>
    from ipywidgets import HBox,VBox,widgets,Button,Checkbox,Dropdown,Layout,Box,Output,Label,FileUpload
ModuleNotFoundError: No module named 'ipywidgets'