Why ？Thanks

[Jason]

G:\vae_tacotron2-master>python train.py --model='Tacotron'
Traceback (most recent call last):
File "train.py", line 33, in
main()
File "train.py", line 24, in main
raise ValueError('please enter a valid model to train: {}'.format(accepted_models))
ValueError: please enter a valid model to train: ['Tacotron', 'Wavenet']