No plots when running notebooks locally

[lokeshh]

I do not see any plots by nyaplot on running any of the notebooks locally on my computer. Instead I get this weird output at the top:

(Click here if the image is not visible)

Notebook used: https://github.com/SciRuby/sciruby-notebooks/blob/master/Data%20Analysis/Usage%20of%20Vector.ipynb

I am running Ubuntu. I have tried running on Firefox and Chrome multiple times, the plots aren't visible.

[lokeshh]

This is the screenshot when running the notebook locally: