导入 KMedoids 错误：导入 _commonnn_inner 时 DLL 加载失败

Question

import numpy as np
from sklearn_extra.cluster import KMedoids

运行上述代码后，出现如下错误：

ImportError                               Traceback (most recent call last)
<ipython-input-7-49a3aa16e8e7> in <module>
      1 import numpy as np
----> 2 from sklearn_extra.cluster import KMedoids

~\Anaconda3\lib\site-packages\sklearn_extra\cluster\__init__.py in <module>
      1 from ._k_medoids import KMedoids
----> 2 from ._commonnn import commonnn, CommonNNClustering
      3 
      4 __all__ = ["KMedoids", "CommonNNClustering", "commonnn"]

~\Anaconda3\lib\site-packages\sklearn_extra\cluster\_commonnn.py in <module>
     29 from sklearn.neighbors import NearestNeighbors
     30 
---> 31 from ._commonnn_inner import commonnn_inner
     32 
     33 

ImportError: DLL load failed while importing _commonnn_inner: The specified module could not be found.

如何解决这个问题？