Sample app not working and doesn't match the code on github

When visiting http://try-prediction.appspot.com/

I get:

Traceback (most recent call last):
  File "/base/data/home/apps/s~try-prediction/1.372939091098291747/main.py", line 25, in <module>
    from predict import PredictAPI
  File "/base/data/home/apps/s~try-prediction/1.372939091098291747/predict.py", line 79
    .execute()
   ^
IndentationError: unexpected indent
