AttributeError: 'MultipartProblem' object has no attribute 'check' (data_viz_to_coder)

Hi,
not sure if this is the right spot to provide feedback. I can't find a suitable way over on kaggle.
Anyways, i startet working through the [*Data Visualization: From Non-Coder to Coder Micro-Course*](https://www.kaggle.com/learn/data-visualization-from-non-coder-to-coder) on kaggle and get the following Error in the first exercise:

```
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
in ()
2 brazil_rank = 3.0
3 # Check your answer
----> 4 step_3.check()

AttributeError: 'MultipartProblem' object has no attribute 'check'
```

I think there is a mismatch between the version hosted on kaggle and the current version of this repository (Step 3 on github is plotting the data, on kaggle it's reviewing the data).

Btw, i really like the `learntools` idea :)