assert path.is_file() exception: no description

[HAOGUOKAI]

When I execute the 'force' file, the code within the 'init.py' file:
path = Path.home() / '.force' / 'machine.json'
assert path.is_file()
produces the error message "exception: no description."
This is likely due to the miss of the 'machine.json' file, but I can't find it.