While running tests for autogoal ML library got this error ModuleNotFoundError: No module named 'scipy'

While testing in autogoal ML library, it is throwing error mentioned above. For this line from scipy.sparse.base import spmatrix in _data.py file.

To reproduce the error, please run:

python -m pytest autogoal tests --doctest-modules -m "not slow" --ignore=tests/contrib --ignore=autogoal/contrib --ignore=autogoal/datasets --cov=autogoal

Error Traceback:

 ERROR collecting autogoal/__init__.py _____________________
autogoal/__init__.py:13: in <module>
    from autogoal import kb
autogoal/kb/__init__.py:1: in <module>
    from ._data import *
autogoal/kb/_data.py:8: in <module>
    from scipy.sparse.base import spmatrix
E   ModuleNotFoundError: No module named 'scipy'

Can you suggest where it is going wrong?