In Linux Ubuntu 22.04 No module named 'javelin'

[KoRiki-Uma]

Hello! I am using system Linux Ubuntu 22.04.
I encountered the following problem:
It seems that the javelin have already installed successfully by this link: https://drive.google.com/file/d/1KThers5mvF826yATyyxvdhVsxdAbpPoM/view

But when I wanted to import javelin, it comes up with some error.

Traceback (most recent call last):
  File "demo.py", line 5, in <module>
    import matplotlib.pyplot as plt
  File "/home/uma/anaconda3/envs/Javelin/lib/python3.8/site-packages/matplotlib/__init__.py", line 129, in <module>
    from . import _api, _version, cbook, _docstring, rcsetup
  File "/home/uma/anaconda3/envs/Javelin/lib/python3.8/site-packages/matplotlib/rcsetup.py", line 27, in <module>
    from matplotlib.colors import Colormap, is_color_like
  File "/home/uma/anaconda3/envs/Javelin/lib/python3.8/site-packages/matplotlib/colors.py", line 51, in <module>
    from PIL import Image
  File "/home/uma/anaconda3/envs/Javelin/lib/python3.8/site-packages/PIL/Image.py", line 68, in <module>
    from ._typing import StrOrBytesPath, TypeGuard
  File "/home/uma/anaconda3/envs/Javelin/lib/python3.8/site-packages/PIL/_typing.py", line 10, in <module>
    NumpyArray = npt.NDArray[Any]
AttributeError: module 'numpy.typing' has no attribute 'NDArray'
(Javelin) uma@uma-virtual-machine:~/Desktop/Packages/javelin-master-2/examples$ python 
Python 3.8.0 | packaged by conda-forge | (default, Nov 22 2019, 19:11:38) 
[GCC 7.3.0] :: Anaconda, Inc. on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import javelin
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'javelin'
>>> from javelin.predict import PredictSignal, PredictRmap, generateLine, generateError, PredictSpear
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'javelin'
>>> exit()

Can you help me about these questions? Thank you very much!