我使用OrbitalPy库在Python中显示轨道。
然而，当我运行程序时（实际上在OrbitalPy的文档/示例中列出）：

from numpy import radians
from scipy.constants import kilo

from orbital import earth, KeplerianElements, Maneuver, plot, plot3d

from orbital import earth_sidereal_day
molniya = KeplerianElements.with_period(
    earth_sidereal_day / 2, e=0.741, i=radians(63.4), arg_pe=radians(270),
    body=earth)

plot3d(molniya)

我得到以下错误：

C:\Users\xxx\Desktop>py molniya.py
Traceback (most recent call last):
  File "C:\Users\xxx\Desktop\molniya.py", line 4, in <module>
    from orbital import earth, KeplerianElements, Maneuver, plot, plot3d
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python311\Lib\site-packages\orbital\__init__.py", line 8, in <module>
    from .plotting import *
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python311\Lib\site-packages\orbital\plotting.py", line 9, in <module>
    import matplotlib as mpl
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python311\Lib\site-packages\matplotlib\__init__.py", line 246, in <module>
    _check_versions()
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python311\Lib\site-packages\matplotlib\__init__.py", line 240, in _check_versions
    module = importlib.import_module(modname)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python311\Lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\xxx\AppData\Local\Programs\Python\Python311\Lib\site-packages\kiwisolver\__init__.py", line 8, in <module>
    from ._cext import (
ImportError: DLL load failed while importing _cext: The specified module could not be found.

我已经尝试过重新安装matplotlib和kiwisolver，但没有任何帮助，甚至在google上搜索这个问题也没有任何结果。