Issue with running quests/dei/WIT_Smile_Detector.ipynb on Qwiklabs

Hello when trying to follow the **Using the What-If Tool with Image Recognition Models** Lab I get the following error when trying to load the pre-trained model:

`from tensorflow.keras.models import load_model
model1 = load_model('smile-model.hdf5')`

`AttributeError: 'str' object has no attribute 'decode'`

I believe this is related to this issue mentioned here:
https://github.com/tensorflow/tensorflow/issues/44467

Yet I couldn't figure out a way to fix this