No module named ‘index‘ after install pyflann


I have some problems installing pyflann in python 3.7.3, after execute:

pip install pyflann

The installation is successfully accomplished, but when I import the library and a run a python program, I got this error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "D:Anaconda3libsite-packagespyflann\", line 27, in <module>
    from index import *
ModuleNotFoundError: No module named index


pip install  -i --trusted-host pyflann-py3
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