Unable to load sent2vec

[mpetruc]

import sent2vec
ValueError: numpy.ndarray size changed, may indicate binary incompatibility. Expected 96 from C header, got 88 from PyObject

uninstalled and reinstalled sent2vec as per https://github.com/epfml/sent2vec.

Running python 3.8.10
numpy 1.20.3
Ubuntu 20.04.4 LTS

Any suggestions/recommendations?
thanks a lot.