AttributeError: module 'py4DSTEM.process' has no attribute 'diffraction'

[nomurayuki0503]

When I run the "ACOM Tutorial Notebook 01", it gives a following error message.

AttributeError: module 'py4DSTEM.process' has no attribute 'diffraction'

version
python 3.8.0
py4DSTEM 0.12.6
pywin32 302