NoneType

[39GodMissing]

Why does this bug always appear?

return getattr(_C, name)(*args, **kwargs)
AttributeError: 'NoneType' object has no attribute 'ContractionType‘

[Terry10086]

Have you sloved this problem?

[39GodMissing]

I successfully changed the Python version to 3.8 once, but failed again during the second run. I would like to ask if there are any recommended Python versions or if this bug is caused by other issues. Thank you!

[Terry10086]

I successfully changed the Python version to 3.8 once, but failed again during the second run. I would like to ask if there are any recommended Python versions or if this bug is caused by other issues. Thank you!

This really helps! #22 (comment)

[39GodMissing]

I successfully changed the Python version to 3.8 once, but failed again during the second run. I would like to ask if there are any recommended Python versions or if this bug is caused by other issues. Thank you!

This really helps! #22 (comment)

Thank you so much for your kind reply!