Yan Chen

**Describe the bug** `ValueError: in user code: /usr/local/lib/python3.7/dist-packages/ydata_synthetic/utils/gumbel_softmax.py:77 call * cat_cols = [GumbelSoftmaxLayer(name=name)(col)[0] for name, col in zip(self.cat_feats.feat_names_in, cat_cols)] /usr/local/lib/python3.7/dist-packages/tensorflow/python/keras/engine/base_layer.py:1006 __call__ ** with ops.name_scope_v2(name_scope): /usr/local/lib/python3.7/dist-packages/tensorflow/python/framework/ops.py:6650 __enter__ scope_name = scope.__enter__() /usr/lib/python3.7/contextlib.py:112...