Dataset in Python visual is not loaded

Hi all, 

did you manage to solve this problem?

I'm having the same issue. It's really frustrating...

I've added a screenshot of my code down below. 

Some key points / information:

- Python visual is working fine, but not loading the data.

- My data is coming from a Power BI Dataset created and managed by my employer.

- I've created a new virtual enviroment and installed the compatible versions of python and the packages.

(with pip and conda - tried both)

- I'm working with Anaconda

Could it be that there a limitations when using a pre build Power BI Dataset?

(I'm not able to use the Power Query Editor on that dataset, nor can I combine it with a additional data source)

I would be extremely thankful if someone has a clue or solution for this problem!

Thanks in advance.

Best regards,

Felix