RuntimeWarning: invalid value encountered in true_divide

This warning may pop up every time COREG is called, i.e. producing a long list of warnings:

/misc/soft/local/pygfz/mambaforge/envs/enval/lib/python3.9/site-packages/arosics/CoReg.py:1188: RuntimeWarning: invalid value encountered in true_divide
  temp = np.array(fft_arr0 * fft_arr1.conjugate()) / (np.abs(fft_arr0) * np.abs(fft_arr1) + eps)