Attribute Error at \pre_pred\

This issues got me to hold on while predicting the output.
I'm attaching the screenshot here and unable to find the actual error. 
I'm using python3.8 and macbook with MacOs Mojave.

![Screenshot 2019-11-19 at 4 18 20 PM](https://user-images.githubusercontent.com/25776176/70243705-210a9c00-1799-11ea-9171-3e44a6a3a082.png)
