error in running

I'm getting error in :

```
view = model.views.overview(validation_set=validation_data,

  File "C:\Users\xyz\Anaconda2\envs\dato-env\lib\site-packages\graphlab\toolkits\_model.py", line 623, in __getattribute__
    elif attr in fields:

AttributeError: 'ItemSimilarityRecommender' object has no attribute 'views'
```
