doc building fails

running make html in the docs folder on the dev branch seems to fail in the regression part.

from minterpy.utils import newt_eval

def get_regression_matrix(lag_poly, points):
    """ constructs the regression matrix by evaluating the lagrange monomials on
    all the points.
    :return: (k x N) the value of each Lagrange monomial in Newton form at each point.
    """

    coeffs_newton = mp.get_transformation(lag_poly, mp.NewtonPolynomial).transformation_operator.array_repr_full
    exponents = lag_poly.multi_index.exponents
    generating_points = lag_poly.grid.generating_points
    return newt_eval(points, coeffs_newton, exponents,
                     generating_points)

------------------

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
Cell In [7], line 1
----> 1 from minterpy.utils import newt_eval
      3 def get_regression_matrix(lag_poly, points):
      4     """ constructs the regression matrix by evaluating the lagrange monomials on
      5     all the points.
      6     :return: (k x N) the value of each Lagrange monomial in Newton form at each point.
      7     """

ImportError: cannot import name 'newt_eval' from 'minterpy.utils' (/Users/uwe/Desktop/minterpy_test/minterpy/src/minterpy/utils.py)
ImportError: cannot import name 'newt_eval' from 'minterpy.utils' (/Users/uwe/Desktop/minterpy_test/minterpy/src/minterpy/utils.py)