roboticstoolbox-python：version problem

[Nickkkkk123]

I started installing the latest version of roboticstoolbox-python (1.1.1) with an error after running the code: ModuleNotFoundError: No module named 'roboticstoolbox.fknm'.
Later, an older version of roboticstoolbox-python (1.0.1) was reinstalled and the same error occurred.

[Nickkkkk123]

What version should be installed to solve the error problem?