ImportError: libpcl_keypoints.so.1.7: cannot open shared object file: No such file or directory

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I'm trying to use PCL library to cluster points in point cloud but when i try to import pcl it shows an error:

>>> import pcl
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "/home/wojtek/.local/lib/python2.7/site-packages/pcl/__init__.py", line 2, in <module>
        from ._pcl import *
    ImportError: libpcl_keypoints.so.1.7: cannot open shared object file: No such file or directory

I've found a topic where is written that i need to install PCL 1.7.2 but i can't find a way to do it...

libpcl-dev version: 1.8.1+dfsg1-2ubuntu2.18.04.1|Ubuntu 18.04 LTS | ROS: Melodic | Python 2.7.15