ccuracy&#34;],
    verbose=1,
    preproc=None,
):
    if not isinstance(preproc, tpp.TransformersPreprocessor):
        raise ValueError(
            &#34;preproc must be instance of %s&#34; % (str(tpp.TransformersPreprocessor))
        )

    if loss_func == &#34;mse&#34;:
        if preproc.get_classes():
            raise Exception(
                &#34;This is supposed to be regression problem, but preproc.get_classes() is not empty. &#34;
                + &#34;Something went wrong.  Please open a Git