Bug in QuantX-1 extension : Extension deprecated ?

Hi,

I'm following a recent tutorial on time series that uses the QuantX-1 extension in order to retrieve the stock prices.

For that I use, the Yahoo Historical Stock Data operator : after filling in the parameters and running the process, the results are empty....

I tried at random another operator  - World Bank Data Extractor - of the extension : after filling in the parameters, I execute the process ...

and the following error is raised : 

Have you an idee of what's going on with these operators / this extension ?

If deprecated, is there an equivalent extension / operator(s) ?

Thanks you for your responses,

Best regards, 

Lionel