Error while running train.py from speech commands in tensorflow examples.

[ayush7]

Have the following error:
File "train.py", line 27, in <module> from callbacks import ConfusionMatrixCallback File "/home/tesseract/ayush_workspace/NLP/WakeWord/tensorflow_trainer/ml/callbacks.py", line 21, in <module> from pandas_ml import ConfusionMatrix File "/home/tesseract/anaconda3/envs/ciao/lib/python3.6/site-packages/pandas_ml/__init__.py", line 3, in <module> from pandas_ml.core import ModelFrame, ModelSeries # noqa File "/home/tesseract/anaconda3/envs/ciao/lib/python3.6/site-packages/pandas_ml/core/__init__.py", line 3, in <module> from pandas_ml.core.frame import ModelFrame # noqa File "/home/tesseract/anaconda3/envs/ciao/lib/python3.6/site-packages/pandas_ml/core/frame.py", line 18, in <module> from pandas_ml.core.series import ModelSeries File "/home/tesseract/anaconda3/envs/ciao/lib/python3.6/site-packages/pandas_ml/core/series.py", line 11, in <module> class ModelSeries(ModelTransformer, pd.Series): File "/home/tesseract/anaconda3/envs/ciao/lib/python3.6/site-packages/pandas_ml/core/series.py", line 80, in ModelSeries @Appender(pd.core.generic.NDFrame.groupby.__doc__) AttributeError: type object 'NDFrame' has no attribute 'groupby'
Happening with both version 5 and 6.1

[Nyceane]

how did you solve it?