pyunity: ModuleNotFoundError: No module named 'vector3'

I am a new user to pyunity… i installed it with pip install pyunity

I was trying out the examples… python -m pyunity 1 it resulted in error: Error log:

PS C:\Users\Lenovo> python -m pyunity 1
Loaded config
Trying GLFW as a window provider
Using window provider GLFW
Traceback (most recent call last):
  File "C:\Program Files\Python38-32\lib\runpy.py", line 185, in _run_module_as_main
    mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
  File "C:\Program Files\Python38-32\lib\runpy.py", line 144, in _get_module_details
    return _get_module_details(pkg_main_name, error)
  File "C:\Program Files\Python38-32\lib\runpy.py", line 111, in _get_module_details
    __import__(pkg_name)
  File "C:\Program Files\Python38-32\lib\site_packages\pyunity\__init__.py",  line 131, in <module>
    from .audio import *
  File "audio.py", line 13, in init pyunity.audio
  File "core.py", line 1, in init pyunity.core
ModuleNotFoundError: No module named 'vector3'

I have tried whatever i can do… but i can’t fix it nor find any module with name “vector3” on the internet…

Specs (if you need):

Python Version: Python 3.8.9
OS: Windows 7 SP 1
Processor: Intel core i3 (x86)