Division by zero warning during sum_norm

[georgyFenix]

Hello!
During preprocessing of example data schisto2.5 I've encountered division bu zero warning.
The warning occurs regardless of OS or python 3 version.
'''
C:\Users\user\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\site-packages\samalg_init_.py:225: RuntimeWarning: divide by zero encountered in divide
D = D.multiply(1 / s[:, None] * sum_norm).tocsr()
'''
Have you encountered it during testing or have any idea what could cause it?